Vaccine stocks have been on the fly ever since a never-before-seen bird flu strain started infecting people around the globe.
On Thursday, a 59-year-old man with previous health conditions died in Mexico after contracting the H5N2 virus. The source of the virus in this case remains unknown.
The Mexican strain is different from H5N1, which has undergone extensive genetic diversification since 2005.
Bird flu, also known as avian influenza, is a type of disease caused by the influenza A virus. It primarily affects birds but can also be contracted by mammals like cats, cows and humans.
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