A 59-year-old man in Mexico City has died from a strain of bird flu known as H5N2, a type that has never been previously found in humans, according to the World Health Organization (WHO). The man's death has raised concerns as it is unclear how he became infected with the virus, although H5N2 has been detected in poultry in Mexico.
It is important to note that H5N2 is distinct from the strain H5N1, which has affected dairy cow herds in the United States. In a separate incident, three farmworkers in the U.S. have contracted mild infections from H5N1.
