I waited a little this year to get my flu shot, but got it today.
I got it too early last year – in August! – and then I learned that the protection from it wanes a little too early as well (when flu is still going around, at the end of the season).
The U.S. Centers for Disease Control and Prevention estimated that in the 2018–2019 season, some 35.5 million Americans came down with the flu and that about 34,000 of them died from it. Flu shots prevented another 4.4 million cases and about 3,500 deaths. [Source: Scientific American].