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Australian
Broadcasting Corporation FOUR
CORNERS Investigative
journalism at its very best
TV PROGRAM
TRANSCRIPT
Broadcast: 1/10/01 The Last Silver
Bullets Four Corners investigates the battle over antibiotics fed to
farm animals. Should they be used? And are we prepared to pay a
potentially deadly price, gambling with the last 'silver
bullets'?
--------- Reporter: Andrew Fowler
ANDREW FOWLER: For years,
farmers have been feeding antibiotics to their animals to make them fatter
faster.
DR JEFF FAIRBROTHER, AUSTRALIAN CHICKEN MEAT FEDERATION:
The only reason we use this product is because we have a huge economic
advantage.
ANDREW FOWLER: The antibiotics they use are the same
'silver bullets' that stop people from dying.
Now there's a link
between those drugs and the creation of an unstoppable 'super bug' in the
food that we eat.
DR PETER COLLIGNON, DIRECTOR, INFECTIOUS
DISEASES, CANBERRA HOSPITAL: They come across the food chain and they can
make people sick.
ANDREW FOWLER: Yet there's no formal testing for
it.
PROFESSOR WARREN GRUBB: "She'll be right, mate," is the
Australian attitude.
It ain't gonna be right.
It's getting
worse.
ANDREW FOWLER: Tonight on Four Corners the battle over
antibiotics fed to farm animals.
Should they be used?
And
are we prepared to pay a potentially deadly price, gambling with the last
'silver bullets'?
Canberra Hospital on Tuesday, August
19.
Inside, a middle-aged woman is recovering from kidney
failure.
The night before, we'd approached the hospital and the
woman had given us permission to film her as part of this
program.
What made her different from the hundreds of other
patients -- the strongest antibiotics weren't working.
She'd become
infected with a deadly strain of bacteria -- so contagious she was
consigned to a special isolation ward to prevent its spread to other
patients.
Shortly before we were to start filming her, the woman
died.
Four Corners arrived just as her family learnt of the
unexpected death and came to pay their last respects.
How do you
personally feel at the moment?
DR PETER COLLIGNON, DIRECTOR
INFECTIOUS DISEASES, CANBERRA HOSPITAL: Well, I think, you know, like all
these situations, this is obviously very sad.
I mean, this is a
case where somebody has got multiple problems, and a contributing factor
has been a fact that there's a bacteria we couldn't treat
adequately.
ANDREW FOWLER: In other hospitals, her death might
never have been disclosed for what it was.
There is no national
mandatory reporting of this infection.
How she got the bug, no-one
is sure.
Fear of the infection has forced many hospitals to keep
their outbreaks quiet.
DR PETER COLLIGNON: Well, I think one of the
reasons is that it never looks good for your hospital to know you've got
these so-called 'super bugs', and that people are having a bad outcome
from it.
ANDREW FOWLER: But do you think people have the right to
know that?
DR PETER COLLIGNON: Well, I think it is a very good idea
if people know that, providing we do it in a way that doesn't unfairly
target one hospital.
The paradox of this is that the hospitals that
do this better in the short-term and report the data look worse than the
hospitals that are often slacker and don't collect the data at all,
because they don't know.
Ignorance is bliss.
ANDREW FOWLER:
The exact number of infections in Australia is unknown, but estimates run
to hundreds.
Since 1994, when the first case appeared at
Melbourne's Austin Hospital almost all major hospitals have been
hit.
Three weeks ago, the Royal Perth Hospital reported 19
cases.
It had to set up a special isolation unit.
This is
what it looks like.
Vancomycin-resistant enterococci -- VRE for
short -- is so contagious and hard to treat hospitals are forced to take
extraordinary precautions.
The woman who died at Canberra Hospital
was allowed only one nurse to take care of her to limit the risk of
contamination.
Even after her death, the threat of infection to
others continued to pose a problem.
Every part of her room had to
be scrubbed, including the walls.
DR PETER COLLIGNON: This is a
germ that hangs around on telephones, on the bedrails, on the doorknobs,
so you have to have scrupulous cleaning at the end, otherwise the bug can
persist.
ANDREW FOWLER: Hospitals use vancomycin as the antibiotic
'silver bullet' to fight infections when all else fails.
As a
wonder drug it was over-prescribed in large amounts both by hospitals and
general practitioners, and this is where the problems
started.
Because of its overuse, the bacteria built up an immunity
to it, creating the 'super bug' VRE.
DR PETER COLLIGNON: I think
there's an expectation in this community that if you're sick, there is a
tablet to make you better.
I think it can be lazy doctoring,
because the easiest thing is to give somebody a tablet and get them out,
you know, so you can see the next patient.
ANDREW FOWLER: The death
of a patient involving bacteria infection is a grim reminder of life
before antibiotics.
Until the discovery of penicillin in the middle
of the last century patients died with wounds that couldn't be
healed.
Now, because of antibiotic misuse, it's happening
again.
The fear is that antibiotics will become
worthless.
DR PETER COLLIGNON: So no shaking, shivers or chills or
anything?
PATIENT: No, no, no.
DR PETER COLLIGNON:
OK.
That's all gone?
PATIENT: Yeah.
All
gone.
DR PETER COLLIGNON: Did anybody else in the family get
sick?
ANDREW FOWLER: Dr Peter Collignon, head of Canberra
Hospital's Infectious Diseases Department, accepts that the medical
profession should take its share of the blame, but he increasingly
believes it's not entirely responsible for creating VRE.
Humans
aren't the only ones capable of developing antibiotic-resistant bugs in
their system.
When they're fed antibiotics, animals can
too.
DR PETER COLLIGNON: When you look at it, you can see the same
classes of antibiotics are used in animals as in humans.
And we
know from overwhelming evidence, particularly in Europe, that if you do
that in animals, resistant bacteria develop, they come across the food
chain and they can make people sick.
ANDREW FOWLER: Australia is
one of the biggest consumers of agricultural antibiotics in the
world.
Antibiotics are fed to lamb and beef in feedlots, pigs in
intensive farming and chickens.
The antibiotics help growth and
also keep down disease.
Every year Australia consumes 700,000 kilos
of antibiotics, three-quarters -- over 500,000 kilos -- in
agriculture.
A link between VRE in humans and VRE in animals has
been proved in European studies, but never in Australia.
Five years
ago, the John Hunter Hospital in Newcastle produced the first
evidence.
In the men's medical ward, one of the John Hunter's
patients appeared to have developed a resistance to
vancomycin.
Many people carry VRE in their bodies and never suffer
any illness.
But when they're sick and given strong antibiotics
like vancomycin, which kills all other bacteria, VRE flourishes and takes
over.
Doctors couldn't understand how the hospital patient could
have contracted VRE.
He had no history of vancomycin use, and it
seemed unlikely that he'd picked up the infection from the
hospital.
DR JOHN FERGUSON, DIRECTOR, MICROBIOLOGY, JOHN HUNTER
HOSPITAL: We screened the entire ward and found two other individuals who
were also carrying this same strain, and those individuals had had some
contact whilst they'd been in hospital.
So it was an infection
control issue for us, which really led us to implementing quite stringent
isolation.
ANDREW FOWLER: As the doctors struggled for answers,
they began looking in unusual places for the source of the mystery
infection.
It was just possible that it had come from something the
patient had eaten.
They remembered the European studies and
wondered if it could have come from local produce.
Instead of
calling in further medical opinion, they called in the local Department of
Agriculture.
DR JOHN FERGUSON: The Hunter's quite a rural
region.
These patients weren't from country areas, but we were
aware that there was evidence of transmission through the food chain, even
then.
So we did persuade the Agricultural Department to cooperate
with some surveys.
ANDREW FOWLER: For the next 10 weeks, teams of
Agricultural Department vets begin scouring local farms, taking manure
samples from cattle and poultry in a bid to track down the mysterious
bug.
Initially, 40 farms were keen to take part in the
study.
Disturbingly, in one of the samples from a poultry farm,
small amounts of VRE were discovered.
If anyone had eaten that
meat, it could have got into their system.
The poultry had been
given Avoparcin, a similar drug to the human antibiotic
vancomycin.
It was proof that a problem detected overseas could
happen here.
DR JOHN FERGUSON: It was certainly very exciting in
the lab during those days when we were processing the cultures and seeing
the results as they emerged, and finding those strains.
ANDREW
FOWLER: What happened next is unclear.
Follow-up investigations
were never conducted, and the case was closed.
DR JOHN FERGUSON: I
think the finding was very significant and highlighted that we could
possibly have a problem with transfer of VRE from animals to humans or
vice versa.
ANDREW FOWLER: Why was there such resistance to you
going back and doing further studies?
DR JOHN FERGUSON: Oh, I
think, politically, it was very sensitive.
It was pointing out,
perhaps, that the food may not be as safe as it was thought to
be.
And there's a lot of economic advantage that attaches to food
safety, or perceived food safety, so that the producers weren't keen, I
think, to have surveys done.
ANDREW FOWLER: The chicken industry
says it would have supported follow-up studies if a formal proposal had
been put to them, but it hardly seemed enthusiastic.
DR JEFF
FAIRBROTHER, AUSTRALIAN CHICKEN MEAT FEDERATION: All we wanted was a
proper experimental program -- as I recall now -- it was three years
ago.
ANDREW FOWLER: Given that you had VRE on at least one of your
chicken farms in the Hunter Valley, wouldn't you have wanted to know more
about that?
Wouldn't you have been asking questions?
What is
this thing?
Where did it come from?
What's the
problem?
DR JEFF FAIRBROTHER: Well, if you want to be a purist, you
probably would have.
But being sensible about it, it was --
ANDREW FOWLER: What's purist about asking a question about --
DR JEFF FAIRBROTHER: Well, hang on.
ANDREW FOWLER:
..whether you've got VRE on your farm or not?
DR JEFF FAIRBROTHER:
The situation was that after that batch of chickens from which that
isolation was made had gone, the farm would have been totally cleaned out,
virtually sterilised as the end of a batch, and the litter would have been
removed.
There would have been no suggestion that the problem still
existed.
And probably it wouldn't have.
ANDREW FOWLER: The
farms concerned would have been routinely cleaned out, but that's not the
point.
Tens of thousands of chickens are presumed to have gone to
market, some of them possibly contaminated with VRE.
If the new
batch of chicks that replaced them was fed the same antibiotics, there
would be equal risk of incubating the resistant bug.
It's a
systemic problem.
DR JOHN FERGUSON: We didn't get to know the size
of the farms or where exactly they were located.
ANDREW FOWLER: So
the names were kept secret from you?
DR JOHN FERGUSON: Yes, that
was our choice.
I mean, we felt it was important to have a blinded
survey that was done in a proper fashion.
ANDREW FOWLER: Have the
names ever been released?
DR JOHN FERGUSON: No, no.
There's
been no publicity about that.
I guess -- I'm not sure that it would
help anybody to know exactly where they were.
I think the important
thing was that --
..those VRE strains were amongst those
animals.
ANDREW FOWLER: Do the health authorities know where those
strains are?
DR JOHN FERGUSON: No.
There was never any, er
--
..advice that went to the Health Department about that
issue.
ANDREW FOWLER: There are two strains of VRE -- one
predominant in animals, the other in humans.
Ferguson's study
discovered both in animals, and both have been discovered in humans
too.
DR WARREN GRUBB ('COUNTRYWIDE', 1984): We looked at some
bacteria from a farm where they were using antibiotic in the feed, We
found that a very large number, a high percentage of the organisms were
resistant to that antibiotic, and that antibiotic has use in the clinical
field.
ANDREW FOWLER: Warren Grubb is a microbiologist.
For
more than two decades, he's been studying the impact on humans of feeding
antibiotics to animals.
DR WARREN GRUBB ('STATEWIDE', 1984): Some
people require black and white evidence before they'll move.
And
there's been lots of evidence around for years which demonstrate the
seriousness of the problem -- the more antibiotic you use, the more
indiscriminate the use is.
ANDREW FOWLER: Back in 1984, he
predicted the probability of dangerous repercussions.
'STATEWIDE'
JOURNALIST: It's a fairly frightening prospect, though, that we might have
to wait for a death in Australia.
DR WARREN GRUBB: Well, that may
be possible.
That may be possible.
ANDREW FOWLER: 17 years
later, he's continued that struggle.
Warren Grubb, now a professor,
carried out a study into VRE in a factory processing chicken in Western
Australia.
PROFESSOR WARREN GRUBB,MICROBIOLOGY, CURTIN UNIVERSITY:
So we screened some of those animals on the production line to see whether
they had resistance to that antibiotic, and, of course, we found that they
did have resistance.
We didn't even tell them we were going to look
for VREs.
We were just sampling and that's all that they knew we
were doing.
ANDREW FOWLER: His recent study backs the Hunter Valley
finding and vindicates his stand.
It found traces of VRE on chicken
carcasses.
But the location of the factory had to be kept
secret.
That was the condition under which the industry let the
tests go ahead.
How difficult is it for you working in that
environment, where you discover something which is a public health matter
but because of the way in which you carry out your research, you can't
reveal the company?
PROFESSOR WARREN GRUBB: Well, it is very
difficult.
I mean, really, if you find this information, you look
at how you're going to control the problem.
And you can't control
the problem unless you find out what practice is being used, where there
has been antibiotic which has been responsible, how widespread is the
problem.
You can't do anything if you can't go back and identify
all the problems.
ANDREW FOWLER: Even the chicken industry was
becoming concerned.
Two years ago, it partly funded a study into
VRE in poultry by Professor Mary Barton, a vet and an acclaimed expert on
the poultry industry.
Her study is considered a landmark
work.
It found that 1 in 14 of the chickens she sampled had VRE on
the carcass.
Again, no-one knows which processing plants produced
the positive samples.
But this time the tests centred on South
Australia.
ASSOCIATE PROFESSOR MARY BARTON, PHARMACY & MEDICAL
SCIENCES, UNIVERSITY OF SOUTH AUSTRALIA: I think that my finding some was
not entirely surprising.
I think they would have been over the moon
if I hadn't found any.
But I think, realistically, they realised
that there would be some, and there were some.
ANDREW FOWLER: If
you knew that a chicken had VRE, would you eat it?
PROFESSOR WARREN
GRUBB: No, I don't think I would.
ANDREW FOWLER: Why
not?
PROFESSOR WARREN GRUBB: My main reason would be that I think
there's sufficient evidence which would indicate that if I ate that
chicken with VRE, that the VRE, if it was still alive, could transfer its
antibiotic resistance into some of the bacteria in my flora, in my own
flora.
ANDREW FOWLER: And that would make you VRE-resistant,
too?
PROFESSOR WARREN GRUBB: Well, I would have an organism which
has resistance to that antibiotic.
WARREN TRUSS, FEDERAL MINISTER
FOR AGRICULTURE: Well, let me say that I eat the food produced by
Australian farmers with every confidence that it is the safest and
healthiest in the world.
ANDREW FOWLER: Would it surprise you to
know that one of the pre-eminent scientists says that he would not eat
food if he knew it contained VRE.
WARREN TRUSS: Well, what I've
always found amongst scientists is that you can always find somebody with
a dissident opinion.
You can always find somebody who is outside of
the mainstream.
ANDREW FOWLER: The incidence of VRE in poultry
can't just be blamed on chicken farmers.
Even they sometimes don't
know what's going on.
Eve Murden used to be a dairy
farmer.
Deregulation and competition policy forced down the price
of milk and drove her out of the industry.
Now in her 70s, she's
starting over again.
18 months ago, she became a poultry
farmer.
EVE MURDEN, CHICKEN FARMER: I have always loved
animals.
And the little yellow fluffy chickens, as I call them,
they're just beautiful.
They each have their own
personality.
And you imagine them, when you get up at 5:30am, what
they're going to look like when you open those doors, and you're never
disappointed.
ANDREW FOWLER: Eve built a state-of-the-art chicken
shed.
Everything is controlled electronically, from the heating to
the water flow and the feed that the chickens eat.
EVE MURDEN: Once
they grow quick, well, then you've got the good meat.
If they don't
grow quick, the meat is tough.
And that's why you have these
feedlots these days and all this sort of thing to grow good
meat.
ANDREW FOWLER: These birds are just a few days old.
By
the time they're seven weeks, they'll be fat enough and ready for
slaughter.
The pace of growth is so fast that some of them don't
make it.
EVE MURDEN: If a chicken has a heart attack, ah, at any
stage of its life, even though we've got 26,700 chickens in the shed, I do
not like losing one of them.
Because you have them for seven weeks,
and at the end of six weeks, if you have a few heart attacks, it sort of
knocks the joy out of it.
ANDREW FOWLER: To lower the death rate,
antibiotics are routinely mixed into the feed stock.
They prevent
disease in crowded sheds and promote growth.
Growers once used
Avoparcin, but it was withdrawn because of its links to VRE.
Now
there's another product -- Virginiamycin.
It's close to Synercid,
another antibiotic in the last-line defence for humans.
But there's
another reason chickens are fed antibiotics -- they kill bacteria in the
gut.
This makes the digestive system more efficient and saves
chicken feed.
DR JEFF FAIRBROTHER, AUSTRALIAN CHICKEN MEAT
FEDERATION: The animal, getting better digestion, it makes better use of
its feed and you don't have to use as much feed.
So that's the way
a growth promotent works.
It means that you can get to a certain
weight for age in a slightly shorter time.
ANDREW FOWLER: The
chicken industry calls these drugs by many names -- growth promoters,
digestion enhancers and antimicrobials.
DR JEFF FAIRBROTHER:
Antimicrobials are used to change the gut flora in the chicken, and they
destroy or kill bacteria that you don't want present in the bird's gut,
and it lets the better bacteria proliferate.
ANDREW FOWLER: But
they're still antibiotics like vancomycin.
DR PETER COLLIGNON,
DIRECTOR, INFECTIOUS DISEASES, CANBERRA HOSPITAL: They're called growth
promoters or sometimes given the name of antimicrobials, but at the end of
the day they're antibiotics, because they're agents that kill bacteria and
they're the same class of agents as are used in humans.
ANDREW
FOWLER: Eve has a close relationship with chicken company Bartter
Enterprises.
It provides the chicks and takes them away again after
she's grown them.
Bartter even supplies the feed.
Do you
know if the feed contains antibiotics?
EVE MURDEN: I have asked
this question many times, and I have been told, "No.
It does not
antibiotics.
"It is good quality grain with enzymes in
it."
ANDREW FOWLER: Do they call them antimicrobials?
EVE
MURDEN: I have never heard that mentioned.
ANDREW FOWLER: When you
say you've asked many times, why did you ask?
EVE MURDEN: Because
people had asked me, the same as you are asking me.
And being a
ferret like I am, I like to find things out, and, ah, so therefore I
asked.
That's what I was told.
ANDREW FOWLER: Eve isn't
alone.
Many farmers don't know they're feeding antibiotics to their
chickens.
One manager of more than 12 farms told us he was unaware
that there were antibiotics in the stock feed.
ASSOCIATE PROFESSOR
MARY BARTON, PHARMACY & MEDICAL SCIENCES, UNIVERSITY OF SOUTH
AUSTRALIA: A lot of farmers don't understand that growth promotents are
antibiotics.
I mean, they will say to you, "We're not using
antibiotics.
We're using growth promotents."
And then you
explain to them that a lot of these growth promotents are antibiotics and
some are antibiotics of concern to human health authorities.
ANDREW
FOWLER: Peter Bartter is the head of Bartter Enterprises, owners of
Steggles Company, the second-largest chicken producer in Australia,
turning out 2.5 million chickens a week.
Eve Murden, who runs her
farm near Newcastle -- she's one of the suppliers of chickens for your
company -- says she's asked your company several times what's in the feed
and whether, in fact, there are any antibiotics, and she was told that
there weren't any.
PETER BARTTER, STEGGLES CHICKENS: Oh, well --
no, I don't know what Eve said or what the conversation was.
Eve is
one of our growers and she's one of our better growers,
actually.
ANDREW FOWLER: She says she was told that there were just
enzymes.
PETER BARTTER: No, well, I don't know.
I don't know
who told her that, nor whether the person that was telling her that was
qualified to speak on behalf of the company as to exactly what was in the
feed.
ANDREW FOWLER: But it would be your general company policy to
tell your growers what's in the feed?
PETER BARTTER: Oh, not
necessarily.
No, we don't necessarily tell them what's in the
feed.
ANDREW FOWLER: But if they ask you they do?
PETER
BARTTER: Oh, well, if they ask us, but it depends who they
ask.
ANDREW FOWLER: Even Mr Bartter appears unsure what's in the
feed.
He first told us his company didn't use Virginiamycin -- an
antibiotic that replaced Avoparcin and experts argue can increase the
volume of VRE in the community.
He said the company now used
another antibiotic called Aviliamycin, which he said was not linked to
antibiotics prescribed for humans.
Do you also add
Virginiamycin?
PETER BARTTER: No.
ANDREW FOWLER: According
to Tim Walker, who's your nutritionist, in a conversation with one of our
researchers, you do.
PETER BARTTER: Oh, in the past we
have.
In the past we have, Virginiamycin.
We either used one
antibiotic or another.
Ah, Virginiamycin has been used in the
past.
ANDREW FOWLER: According to Tim Walker, they will be rotated
every four to six months, so they'll be rotated back on
again.
PETER BARTTER: Well, then, that may be the case if we're in
a rotation.
All I know is what we're feeding at the
moment.
But if they're rotating, then that's OK.
I've got no
problem with that.
My belief is that, ah, Aviliamycin, the product
we're using at the moment, is not used -- is not connected with
VRE.
ANDREW FOWLER: Right, but Virginiamycin is, and you do still
use that.
PETER BARTTER: Well, we have used it, and if it comes
into the rotation again, then it will come into the
rotation.
ANDREW FOWLER: The industry says that the antibiotics are
administered at such low levels they pose no threat.
PETER BARTTER:
It's a very small amount of an antimicrobial or antibiotic.
It's,
ah -- we feed two --
..in one tonne of feed we put two teaspoons,
which is 10 grams in one tonne of feed.
Now that's --
Imagine two teaspoons in 1,000 packets of one-kilo sugar down at
the supermarket, if you can imagine what that looks like.
DR PETER
COLLIGNON: Well, paradoxically, giving it at a low level may be worse than
giving it at a high level.
ANDREW FOWLER: Why's that?
DR
PETER COLLIGNON: In the laboratory, if you want to induce antibiotic
resistance, what you do is have agar plates with low levels of antibiotics
in it, because if you give high levels, the bacteria die.
If you
give low levels they persist, and they're given a selective advantage, so
resistant varieties are more likely to develop.
ANDREW FOWLER: The
chicken industry goes on to say that even if VRE does exist in meat, it's
the customers' fault if they get sick.
Prolonged high temperatures
kill antibiotic-resistant bacteria.
If the food is cooked properly,
the drug-resistant bacteria won't survive, they say.
DR JEFF
FAIRBROTHER: If you cook your product, it doesn't matter whether it's a
resistant bacteria or not a resistant bacteria, it'll be destroyed by a
normal cooking process.
So in the long run, if you've cooked your
chicken product or any other meat product for that example, you're not
gonna have a problem.
ANDREW FOWLER: But is the industry
right?
This is a top Sydney restaurant with impeccable
hygiene.
Yet scientists say that if VRE gets into the food chain,
even the best practices of the best chefs or the cleanest home kitchen may
not be enough.
Handling food contaminated with VRE would need the
sterilisation procedures of an operating theatre to be
risk-free.
PROFESSOR WARREN GRUBB, MICROBIOLOGY, CURTIN UNIVERSITY:
You take the carcass off, or you might use tongs, so you've just handled
an uncooked carcass with the tongs.
You then take off the cooked
carcass with your tongs -- you recontaminate the carcass that's been
cooked.
ANDREW FOWLER: VRE can be anywhere, whether it's chicken,
pig or anything you eat.
Even vegetables grown using chicken manure
may be contaminated.
It's such a potential problem that three years
ago, the Federal Government set up a special task force.
DR PETER
COLLIGNON (IN COVERSATION): Mind you, I think it's good that veterinarians
are into public health, because they do have a better idea with the food
business and where it's at more than medicos.
ASSOCIATE PROFESSOR
MARY BARTON: And we're not focused on one species.
DR PETER
COLLIGNON: No, you're not, and also you actually know more where the chain
goes.
ACTION GROUP MEMBER: -- which is probably beef.
ACTION
GROUP MEMBER 2: How do I account for it in poultry?
GROUP MEMBER 1:
They're obviously wheat-fed bovines.
ANDREW FOWLER: This is the
most recent meeting of the action group arising from that task force -- an
august collection of experts in microbiology and infectious diseases, like
Dr Collignon and Professor Barton, an expert in the veterinary use of
drugs.
They come from opposite sides.
ASSOCIATE PROFESSOR
MARY BARTON: Oh, go on.
You've been brainwashed.
DR PETER
COLLIGNON: No --
Well, no --
What?
I tell you, I'm
regarded as a, sort of, a softie for industry as far as the European
perspective goes, I think.
You know, from what I can -- can
tell.
I mean --
ASSOCIATE PROFESSOR MARY BARTON: Go
on.
DR PETER COLLIGNON: Well --
ASSOCIATE PROFESSOR MARY
BARTON: You've been brainwashed.
ANDREW FOWLER: Attempting to
bridge this gap is Professor John Turnidge, the chairman of the action
group.
How difficult has it been for you to stitch together the
people, the disparate groups that there are that sit around the
table?
PROFESSOR JOHN TURNIDGE, DIRECTOR, INFECTIOUS DISEASES,
WOMEN'S & CHILDREN'S HOSPITAL, ADELAIDE: Um, over some issues it's
quite easy.
Over other issues, it can be quite
difficult.
Um, we're -- I mean, more or less, at the cutting edge,
I think.
Um, you know, on an international scale, of how do you
approach this difficult problem where you've got two group -- two
professions who've been operating in different ways independently, um, for
nigh on 50 years with a class of drugs and are only now trying to see a
common ground for operation.
ANDREW FOWLER: The group is acting
upon the findings of a Federal Government report which cited conclusive
evidence VRE could find its way into the food chain and infect
humans.
The chicken industry remains sceptical.
It says the
resistant bacteria are then able to spread from one host to another, human
to human, animal to animal, animal to human or human to
animal.
Either by direct contact, or in the case of bacteria of
animal origin, via the food chain.
DR JEFF FAIRBROTHER:
Mmm.
ANDREW FOWLER: It's a very conclusive statement.
DR
JEFF FAIRBROTHER: Well, that's --
that's what they've said but,
er, what y-y-you --
ANDREW FOWLER: Well, this is a cross-party, a
cross-industry group of people.
DR JEFF FAIRBROTHER: And that's
their theory.
ANDREW FOWLER: Well, that's what they're saying --
DR JEFF FAIRBROTHER: -- this is the way it can
happen.
That's what they're saying and I'm saying, in theory,
that's what they're saying can happen.
Are you --
Do you
agree with that?
DR JEFF FAIRBROTHER: In theory, yes.
In
practice, I would have my doubts as to whether it is a significant
problem.
ANDREW FOWLER: Don't you have a problem if the very basic
premise isn't accepted by the industry?
PROFESSOR JOHN TURNIDGE:
Oh, yes, but I guess there are still people who think that the Earth is
flat.
Um, and we can't stop them thinking that.
Um, but all
we can do is say that the majority of people understand that there is a
risk issue here.
Um, we do accept it and we're gonna take measures
to change the situation.
ANDREW FOWLER: The action group wants to
set up a national system to test for VRE in hospitals, food and on the
farm.
But that plan may already be compromised.
One proposal
discussed by the action group and the companies which supply veterinary
drugs is for drug companies themselves to pay for and supervise
testing.
What are the risks of having a drug company paying for the
surveillance of its own products?
PROFESSOR JOHN TURNIDGE: Er, the
risks of the surveillance, er, being conducted by the pharmaceutical
industry alone is that they choose very carefully which things to survey,
how to do the surveillance.
We don't get, if you like, the
independent view, the proper epidemiological view.
ANDREW FOWLER:
How much of a problem is that for you?
PROFESSOR JOHN TURNIDGE:
Well, it can be a problem because then we're totally reliant on industry
to fund the surveillance and then, er, perhaps prevent -- present the
selected view of how to interpret that data.
We would far prefer an
independent organisation running the surveillance with, er, with financial
assistance.
WARREN TRUSS: Well, there are -- there are --
there are health authorities involved in these
issues.
There are industry -- industry people involved in these
issues.
They are all supervised by independent
agencies.
There are --
ANDREW FOWLER: This is the chairman
of the committee who's saying he's worried about the VRE surveillance
program that you're gonna be involved in.
WARREN TRUSS: There are
600 million animals in Australia.
18 million people.
And so,
er, there are certainly a lot of, er, testing and examination processes
that need to be undertaken.
Er, I'm satisfied that the, er, testing
arrangements are undertaken with integrity and with a determination to
ensure that our health standards are high.
ANDREW FOWLER: He also
says we would prefer an independent organisation running the surveillance
with financial assistance.
WARREN TRUSS: Well, if the chairman of
the committee has got concerns, it's surprising he hasn't raised them with
me.
Er, it's surprising that he would go to Four Corners first to
raise these sorts of issues.
I think it is important that if there
-- if there are agencies that have concerns about the way in which the
issues are -- are being dealt with, then they're raising them with the
Health Minister and -- and with me, who are jointly looking at the
implementation of these recommendations.
ANDREW FOWLER: Government
works closely with the agricultural chemical industry.
Here at a
conference run by AVCARE, the agricultural chemical companies' umbrella
group, representatives from farming and government mix with the
agricultural pharmaceutical lobby.
PETER HOLDSWORTH, DIRECTOR,
AVCARE: No individual organisation's got all the answers.
We've
gotta work together on this and then come up with the --
with the
best way forward.
ANDREW FOWLER: Peter Holdsworth is AVCARE's
director of regulatory and scientific affairs.
PETER HOLDSWORTH:
We're working with the government to come up with the most appropriate
surveillance program.
Now, for the end of the day, the, er, the
equation is that that is the way the system will work --
Well,
we'll deal with it as we -- when we come to that.
ANDREW FOWLER:
Whoever funds testing, the model for analysing them is already in
place.
It's called the National Residue Survey, part of the
Department of Agriculture.
The NRS monitors levels of chemicals and
antibiotics in food.
A similar system would be used to test for
drug-resistant bacteria like VRE.
The existing arrangement is for
the companies being tested to pay the bill.
It's called full cost
recovery.
There are accusations that this system has already
failed.
We were contacted by a former public servant who worked
with the National Residue Survey.
He told Four Corners that the
user-pays system and resultant funding shortages bred low staff
morale.
He spoke on the condition his face and voice couldn't be
identified.
NATIONAL RESIDUE SURVEY SOURCE: Because of the effects
of full cost recovery, the number of samples that have tested, say for
residues in poultry, has reduced by half.
Er, and the number of
tests for helminthics in pigs is reduced by about the same
amount.
By about 50 per cent in a 10-year period.
ANDREW
FOWLER: What are the residues that have been reduced --
..er, the
testing that's been reduced by half in poultry?
Is this for
antibiotic residues?
NATIONAL RESIDUE SURVEY SOURCE: Yeah, the
residues that are being tested for in poultry, they've been reduced by
half --
are antibiotic residues, yes.
ANDREW FOWLER: How
significant is that?
NATIONAL RESIDUE SURVEY SOURCE: Well, it's, er
-- it's significant in a public health sense.
Because reduction of
this testing is -- will reach a stage where it's virtually
ineffective.
ANDREW FOWLER: Government statistics confirm the
decline in testing for residues under the same user-pays model being
proposed for testing for VRE.
In 1989, checks for antibiotic
residue were made on 1,125 poultry samples.
A decade later, the
number of samples tested had fallen by half.
Isn't it true that the
National Residue Service has been lobbying industry for more money for
testing because there aren't sufficient funds being made
available?
WARREN TRUSS: Well, the industry --
The testing
arrangements have been expanded significantly.
We are conducting a
whole range of tests through a whole range of
industries.
Obviously, you could always do more but you have to
place balances between what is reasonable, what is fair and reasonable,
and what is likely to achieve significant outcomes for the Australian
people.
ANDREW FOWLER: So you see nothing wrong with the people who
are responsible for testing the products having to go cap in hand to the
producers and asking for money to test their own products that may, in
fact, lose to the -- lead to them losing money?
WARREN TRUSS: There
are always negotiations that go on between the authorities as to what is
an appropriate level of testing within every industry.
We have a
much higher level of testing than most countries in the
world.
ANDREW FOWLER: In November last year, a visiting European
Union delegation issued a damning report about the way that livestock is
tested in Australia.
It observed that farms were informed in
advance of inspections and therefore testing was unreliable.
The EU
report also noted that Australian testing wasn't independent of
producers.
WARREN TRUSS: Well, each country has a right to set
their own standards in relation to the food that's sold within their
borders.
We do that in Australia.
We have some of the
highest standards anywhere in the world.
Food sold in Australia
meets our standards.
Food sold in Europeans -- in Europe has to
meet their standards.
And if Australians choose to export to that
country, we will meet their standards.
PETER BARTTER: We'd be happy
if the government wants to spend more of their money on doing things and
-- and testing and in the field.
If the industry's involved to a
certain extent, I'm sure that's only there to defray some of the costs of
doing these things.
But, er, you know, I know our company acts in
complete integrity any time that we're asked for sampling or testing of
anything.
ANDREW FOWLER: But if industry is worried about who
pays, it's worth noting that outbreaks of VRE cost Australian hospitals
hundreds of thousands of dollars a year in extra staff and special
isolation wards to prevent the infection spreading.
If VRE becomes
more prevalent in our food, doctors fear it might genetically fuse with
golden staph, one of the most aggressive bacteria known to medical
science.
There's already a resistant strain of golden staph called
MRSA.
That doesn't pass through the food chain but if there's more
VRE around the risk of a hybrid 'super super bug' also
increases.
What doctors fear is that antibiotic-resistant staph
itself may become completely resistant to vancomycin.
DR PETER
COLLIGNON: The very people who have the serious infections with the VRE
germ often also have these staph germs on them -- these MRSAs.
In
the laboratory, the gene encoding for this vancomycin resistance can be
transferred from the enterococcus to the golden staph, and it has also
happened in experimental animal situations.
If we get a germ that
is untreatable with current antibiotics, we're back in the pre-antibiotic
era for that super bug.
ANDREW FOWLER: The medical profession must
bear some of the blame for the rise of drug-resistant
bacteria.
Overprescribing these drugs in the human community is
still a huge problem.
But now the animal livestock industry is
being called to account.
They've relied upon antibiotic use for a
long time, and they don't like change.
DR JEFF FAIRBROTHER: Well, I
suppose you can look at it pragmatically, and, you know, how long does it
take for the drug resistance to build up?
Or do you just assume
that every product you use is going to cause drug resistance?
And
if you want to decimate the whole of the livestock industries in this
country and around the world, you'd probably go along the --
..on,
if you like, that purist view of the medical profession, but I would
suggest to you and to the medical profession, if they got their house in
order and they didn't overprescribe antibiotics the way they do, we
wouldn't probably even be having this discussion.
ASSOCIATE
PROFESSOR MARY BARTON: There's -- a lot of the animal industries are
operating at -- at fairly marginal levels of -- of -- of -- um --
..uh -- productivity, in the sense that they make a very small
margin of cents per kilo of chicken meat or pig meat or whatever it is
they're producing.
We should find other ways of achieving that, not
using antibiotics.
ANDREW FOWLER: It's taken almost 20 years to
accept that antibiotic use in animals poses a threat to human
health.
ASSOC. PROF. JOHN TURNIDGE: If we continue to use
antibiotics at the levels that we're currently using them in Australia,
we're going to have a lot of resistant bugs.
We're going to have a
lot of sick people in hospital who have got hard-to-treat
infections.
ANDREW FOWLER: After all the years you've spent as a
microbiologist, is there any one thing that makes you
angry?
PROFESSOR WARREN GRUBB: Probably too little too
late.
ANDREW FOWLER: When you say, "Too little too late," what do
you mean by that?
PROFESSOR WARREN GRUBB: I think that we should
have been doing a lot more, a lot -- a long time ago to try and address
this serious problem of antibiotic resistance.
ANDREW FOWLER: Many
farmers fear they'll be the losers if they stop using antibiotics, that
farming will become more complicated and more costly.
But what are
the costs of feeding antibiotics to livestock?
For a mere 60 years,
human beings have been able to fight life-threatening
infections.
Now the overuse of miracle drugs threatens to destroy
this profound benefit to human health.
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© 2001 Four
Corners. Australian Broadcasting Corporation. |