Nearly 58 million birds from commercial and backyard flocks have been wiped out in the U.S. since last February, officials say, marking the worst outbreak of avian influenza on record.
on record is threatening to stretch into a second year, as the United States races to contain a virus that has already caused some food prices to soar amid a shortage of eggs.in the U.S. since last February, according to the U.S.
Efforts to prevent infections in commercial and backyard flocks are ongoing, but slowing the outbreak has been challenging because the virus seems to have gained a foothold in species of wild birds, said Biao He, a professor of infectious diseases at the University of Georgia College of Veterinary Medicine.“That’s how the virus can go from Asia to Europe to North America — all the way around the world,” He said.
Still, the scale of the spread is putting strain on animal health laboratories. Suresh Kuchipudi, the interim director of the Animal Diagnostic Laboratory at Pennsylvania State University, said three animal testing laboratories in Pennsylvania are processing several thousand samples each week. His lab is largely operating seven days a week.
Local weather conditions also influence how the virus spreads. The sun can, for instance, naturally disinfect surfaces while gloomier days help viral particles survive on surfaces contaminated by infected bird poop, Lorenzoni said.
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