avian flu outbreak

"If you have a bird that has a very short feeding window before it's ready for harvest, that can be a lot more challenging because you also need to allow the withdrawal period after the vaccine before the bird is harvested," she adds. The poultry industry has been credited with surveillance and prevention of avian influenza but the virus remains a threat. After several weeks without new virus detections, the area is required to test negative in order to be deemed free of infection. Though experts have said the virus rarely infects humans, HPAI has been detected in mammals such as skunks, raccoons, harbor seals, red foxes and bears, according to the USDA. Vaccination also could delay outbreak detection, since it can potentially hide non-apparent infections in infected birds. The current most problematic strain, H5N1, was first detected in southern China and Hong Kong back in 1996. Avian Influenza. ScienceDaily. Poultry can become infected through direct exposure to wild birds but more likely from fecal matter that contaminates the ground around farms or yards. These cookies may also be used for advertising purposes by these third parties. The outbreak is "wiping out everything in numbers we've never seen before," Jennifer Mullinax, an assistant professor of environmental science and technology at the University of Maryland, told Sky News. Skip directly to site content Skip directly to search. HPAI viruses cause high mortality in poultry, and occasionally in some wild birds. Some research indicates that detection of HPAI viruses in wild birds has become more common. But humans also live in high densities in many cities around the world, providing the virus similar tinder should a human-compatible variant arise. The primary natural hosts and reservoir of AI viruses are wild waterfowl, such as ducks and geese. No known human-to-human spread has occurred with the A(H5N1) virus that is currently circulating in birds in the United States and globally. The third and most worrisome reason that this virus is getting so much press is that H5N1 now seems to be transmitting well between individuals of at least one mammalian species. A flock of pintail ducks flying in winter. Denise Chow is a reporter for NBC News Science focused on general science and climate change. Yuko Sato, an associate professor of veterinary medicine who works with poultry producers, explains why so many birds are getting sick and whether the outbreak threatens human health. There have been relatively few human infections detected fewer than 900 documented globally over several decades but about half of those infected individuals have died. *Highly pathogenic avian influenza (HPAI) and Low pathogenic avian influenza (LPAI) are described in the Classification of bird flu viruses section. Many migratory bird species travel thousands of miles between continents, posing a continuing risk of AI virus transmission. Yuko Sato is an associate professor of veterinary medicine at Iowa State University. In January, Insider's George Glover explained the egg crisis facing Americans as prices surged by almost 60% in 2022 due to the influenza outbreak. "I'm hopeful that this is not the new normal for us," Richard Webby, director of the World Health Organization's Collaborating Center for Studies on the the Ecology of Influenza in Animals, tells NPR.

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