The great influenza in 1917-18 killed 50,000,000 people at the end and following WWI. The great Kentuckian Abraham Flexner helped invent the flu shot, won the Nobel prize and built Jewish hospital in Louisville (the street it is on is named Flexner).
Unless you are allergic to eggs, I suggest that you take it. Even if you catch the flu the shot will make it less debilitating.
The street is Abraham Flexner. I've known that street for 30 years but I didn't know who he was. Thanks for the info.