A second human death linked to the H5N1 bird flu variant has been confirmed in the United States,prompting heightened surveillance by the Centers for disease Control and Prevention (CDC). The case, identified in Michigan, follows an earlier confirmed fatality in april and raises concerns about potential mutations of the virus.
Bird flu, or avian influenza, is a viral infection primarily impacting poultry-including chickens, ducks, turkeys, and geese-and wild birds. While human infection is rare, it typically occurs through direct contact with infected birds, their excrement, or contaminated surfaces. The CDC is closely monitoring the situation to determine if the virus is evolving to spread more easily between peopel, a development that could signal a broader public health threat.As of May 3, 2024, no evidence suggests human-to-human transmission of this specific variant.
The Michigan resident, who had been exposed to poultry, experienced symptoms and tested positive for the virus after contact with infected birds. Health officials are investigating to identify any close contacts who may have been exposed and to assess the risk of further spread. A separate case in Texas, the first confirmed U.S. human infection with this strain, involved a dairy worker who had direct contact with infected cattle.
The CDC emphasizes that the current risk to the general public remains low. However, the agency is urging individuals who work with poultry or wild birds to take preventative measures, including wearing protective gear and practicing good hygiene. the recent cases underscore the importance of ongoing monitoring and research to understand the evolving nature of avian influenza viruses and to prepare for potential pandemic threats.