What you need to know to understand H5N1, H5N2 and the different strains of flu circulating now, and what the government should be doing to control the risk to people.

Scientists are scrambling to understand the rapidly evolving bird flu situation in North America, as the first laboratory-confirmed human case of H5N2 emerged.A 59-year-old man in Mexico City died from the avian influenza strain – previously unknown to have infected humans – after contracting the virus from an unknown source,

A man in Mexico has died after contracting the first lab-confirmed human infection with H5N2 bird flu. It’s unclear how the man was exposed to the virus, but this type of avian flu has previously been found in poultry in the country. The risk to the general public is still considered to be low.