Flu In May 2024. In the northern hemisphere, elevated influenza activity was reported in countries in central america and the caribbean, western. The first human case of h5n1 bird flu linked to an outbreak in dairy cows in the united states was reported on april 1, 2024, in texas.
Why cdc estimates the burden of flu; Human infection with an influenza (flu) virus that normally spreads in pigs and not people.