In 2015, about 30% of the cases were traced directly to wild bird origins, compared to 85% this year, the USDA told Reuters. Clearly, the virus needs careful monitoring and surveillance to check that it has not mutated or recombined, but the limited numbers of cases of human disease have not increased markedly, and this one case in itself does not signal the global situation has suddenly changed," he said. With the recent detections of the Eurasian H5 strain of highly pathogenic avian influenza (HPAI) in wild birds and domestic poultry in the United States, bird owners should review their biosecurity practices and stay vigilant to protect poultry and pet birds from this disease. Views expressed here do not necessarily reflect those of ScienceDaily, its staff, its contributors, or its partners. The US is no stranger to the impact of the disease, with the H5N8 strain having led to the culling of 50 million birds in 2015. Though human infection is currently rare, efficient transmission between farmed minks in Spain raises concerns about potential human transmission. Influenza viruses are common among wild aquatic birds, which often show no symptoms despite being infected. You can review and change the way we collect information below. Human infections with bird flu viruses have most often occurred after close or lengthy unprotected contact (i.e., not wearing gloves or respiratory protection or eye protection) with infected birds or places that sick birds or their saliva, mucous and feces have touched. Read the original article. Save my name, email, and website in this browser for the next time I comment. "This paper illustrates how unprecedented it is, and describes what we think is coming. Questions? University of Maryland. CDC twenty four seven. H5N1 is currently the most problematic strain of bird flu, with impacts that extend beyond poultry. The spread of bird flu viruses from one infected person to a close contact is very rare, and when it has happened, it has not led to continued spread among people. The deaths of chickens, turkeys and other birds represent the worst U.S. animal-healthdisasterto date, topping the previous record of 50.5 million birds that died in an avian-flu outbreak in 2015. Since December 2021, 11 human cases of H5N1 have been reported globally. It was H5N1, a highly pathogenic strain of avian influenza. He can be reached at Evan.Bush@nbcuni.com. hide caption. In January, the dangerous H5N1 flu virus was found in an American wigeon duck in South Carolina the first U.S. case since 2016, according to the Centers for Disease Control and Prevention. "Unlike H5N8, this disease is heavily impacting wild birds," Johanna Harvey, a postdoctoral researcher and the lead author of the study published in Conservation Biology at the University of Maryland, said.
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