I learned about it from a guy on Bluesky that posts stuff off Bloomberg - "MEXICO PATIENT DIED AFTER CATCHING NEW STRAIN OF BIRD FLU: WHO".

Full text...

WHO confirms first human case of avian influenza A(H5N2) in Mexico | Reuters

June 5 (Reuters) - The World Health Organization on Wednesday said it has confirmed a fatal case in the the first laboratory-confirmed human case of infection with avian influenza A(H5N2) in Mexico.

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WHO press release

Human infection caused by avian Influenza A(H5N2)- Mexico

A 59-year-old resident of the State of Mexico [was] hospitalized in Mexico City and had no history of exposure to poultry or other animals.