Farm Animals Are Hauled All Over the Country. So Are Their Pathogens.
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As they travel, farm animals can also leave pathogens in their wake. In one study , scientists found that disease-causing bacteria, including some that were resistant to antibiotics, flowed off moving poultry trucks and into the cars behind them. The trucks were “just disseminating these antibiotic-resistant bacteria,” said Ana Rule, an expert on bioaerosols at Johns Hopkins University Bloomberg School of Public Health and an author of the study. Contaminated transport vehicles have also been known to spread pathogens long after the infected animals have disembarked and may be playing a role in the dairy cow outbreak, officials have said. Infected animals can then spark outbreaks at their destinations, including livestock auctions, which often attract animals too old, sick or small for the commercial food supply. Such auctions “would be a great place for H5N1 to move from cattle into swine,” Ms. Linder said. Pigs are particularly concerning. They can be infected by multiple