But the disease was eradicated in North America that same year, largely because it did not seriously impact wild birds, which made containment through culling poultry relatively easy. An outbreak of highly pathogenic avian influenza (HPAI) in chicken and turkey flocks has spread across 24 U.S. states since it was first detected in Indiana on Feb. 8, 2022. You can review and change the way we collect information below. Avian flu viruses have evolved to infect cells of the intestine, while human flu viruses have evolved to infect cells of the respiratory tract. Because H5N1 doesnt spread well between people, and because direct infection of humans by infected birds is still relatively rare, H5N1 has not yet erupted into a human epidemic or pandemic. The same strain had caused a wave of bird flu outbreaks across Europe and Asia. A man weighs and checks his flock of white turkeys at his family's farm last year in Townsend, Del. ", A biosecurity sign is seen at the Powers Farm, which raises turkeys in Townsend, Del. For commercial and backyard flocks, many early infections centered along the intersection of the Central and Mississippi flyways of migratory wild birds. Eggs on a shelf at Pioneer Supermarkets in Brooklyn, N.Y., on Thursday. 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. If allowed to spread unfettered, the pathogen could evolve in such a way that makes it more devastating or harder to control. APHIS is working closely with State partners on surveillance . The paper was published April 19, 2023, in the journal Conservation Biology. Instead, the virus sort of simmered through the summer months, she adds, "and then we get into the cooler, wetter months of the fall and we see a resurgence. The Powers Farm white turkey flock is seen under shelter as part of an effort to prevent exposure to avian influenza on Nov. 14, 2022 in Townsend, Del. Though human infection is currently rare, efficient transmission between farmed minks in Spain raises concerns about potential human transmission. So far, current H5N1 bird flu viruses lack changes seen in the past that have been associated with viruses spreading easily among poultry, infecting people more easily, and causing severe illness in people. Avian influenza A (H5N1) was first detected in the Region of the Americas in birds in December 2014. Seasonal flu vaccination will not prevent infection with bird flu viruses, but can reduce the risk of getting sick with human and bird flu viruses at the same time. What we know about the deadliest U.S. bird flu outbreak in history - NPR Thats when production of eggs is hammered.. Content on this website is for information only. Hagerman warns that in a time of inflationary pressure and supply-chain snags, it can be hard to directly link a price hike to the virus. "It's difficult to estimate how many birds are truly affected across wild populations, but we're seeing dramatic disease impacts in raptors, sea birds and colonial nesting birds. Access your favorite topics in a personalized feed while you're on the go. Since early 2022, more than 49 million birds in 46 states have either died as a result of bird flu virus infection or have been culled (killed) due to . The research team recommends a management approach based on a method called Structured Decision-Making, which follows a specific process of identifying and bringing together relevant individuals with an interest, expertise or stake in an issue, distinguishing the unknown from the known factors and establishing measurable goals and actions with quantifiable results. Once that happens, entire flocks typically need to be culled. Which cells influenza infects is partially dictated by the specific receptor that it binds. Last week, the US government started testing four new bird-flu vaccines to try and protect the poultry from this mass outbreak, Reuters reported. California condor deaths: 20 birds dead amid avian flu outbreak - USA Today Speedy Robo-Gripper Reflexively Organizes What Made Us Human? A new deadly bird flu is infecting wild birds and may not go away - NPR

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