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IATP Hog Report - Institute for Agriculture and Trade Policy

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Section 2<br />

reach humans, including: 59 direct transmission via contaminated meat,<br />

transmission of the gene mediating resistance to other bacterial strains<br />

capable of infecting humans, <strong>and</strong> indirect transmission of resistant strains<br />

via the accumulation of such strains in the environment. Fecal matter<br />

having resistant bacteria in it can contaminate carcasses at the<br />

slaughterhouse <strong>and</strong> remain on meat cuts that eventually reach the<br />

consumer. Slaughterhouse workers <strong>and</strong> even farmers can harbor antibiotic<br />

resistant bacteria <strong>and</strong> transmit them to their families.<br />

http://www.iatp.org/hogreport/sec2.html (8 of 38)2/27/2006 3:50:06 AM<br />

When pathogens are resistant to antibiotics the delay caused during<br />

repeated ef<strong>for</strong>ts to find an antibiotic effective against the given pathogens<br />

can be fatal (especially <strong>for</strong> the elderly, young children, <strong>and</strong> immunecompromised<br />

individuals). Since some bacteria are resistant to more than<br />

one antibiotic, it may take even longer <strong>for</strong> medical professionals to find an<br />

antibiotic that is effective against them than if the bacteria were resistant<br />

to only one antibiotic. An untreated or poorly-treated infection increases<br />

the risk that the patient will die. Longer periods of infectiousness increase<br />

the pool of infected people that are moving in the community <strong>and</strong> that<br />

expose the general population to the risk of infection with resistant strains<br />

of bacteria. 60<br />

Antibiotic resistance increases costs of treatment in other ways. Older<br />

antibiotics can be sold in generic <strong>for</strong>ms that cost consumers less than<br />

private-label drugs. However, as older antibiotics become ineffective due<br />

to resistance, newly patented <strong>and</strong> more costly private-label antibiotics<br />

must be used. 61<br />

New or alternative drugs may be more toxic (that is, have stronger side<br />

effects) or be less effective than those that would be used if the infecting<br />

organisms had not become resistant. 62 Even alternative new drugs may be<br />

compromised, especially if they are related to drugs originally thought to<br />

have little potential <strong>for</strong> human use that were approved <strong>for</strong> use as growth<br />

promoters in animals. 63 Such is the case with the newly approved<br />

antibiotic Synercid, used <strong>for</strong> treating human disease, <strong>and</strong> also with<br />

vancomycin, an antibiotic of last resort <strong>for</strong> certain human diseases. 64 Use<br />

of virginia-mycin selected <strong>for</strong> enterococci with resistance to it <strong>and</strong> to<br />

Synercid. Use of avoparcin, a growth promoter in poultry, selected <strong>for</strong><br />

vancomycin resistant enterococci among animals; the same vancomycinresistant<br />

clone of enteroccocci has been found in animals <strong>and</strong> people. 65<br />

The market <strong>for</strong> antibiotics is influenced by the levels of resistance that<br />

exist in the microbial population. 66 Because it costs a great deal to bring a<br />

new antibiotic on the market, drug companies have a strong incentive to<br />

sell as much of it as possible, thus contributing to the resistance problem<br />

that eventually necessitates new ef<strong>for</strong>ts be undertaken to develop a<br />

substitute. Shareholders <strong>and</strong> investors in pharmaceutical companies

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