Bird flu patient had no apparent contact with animals—there’s still no evidence of sustained human-to-human spread

Six healthcare workers in the US who were in close contact with a bird flu patient developed mild respiratory symptoms, sparking concerns about human-to-human transmission. The patient had no contact with animals, indicating a potential risk. Although only one worker was tested, the results were negative. Bird flu is caused by influenza A viruses, such as H5N1, which has been detected in birds and some mammals. While there have been mild cases in humans, the risk of sustained human-to-human transmission remains low. Monitoring and updating flu vaccines is essential to prevent potential outbreaks and genetic changes that could affect humans.

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