You know, I don't think I've EVER caught influenza or "the flu", despite never having a vaccine for the virus.
ok... how dangerous is the flu though?
It can be very dangerous. Common symptoms are high fever, runny nose, sore throat and other things that leave you feeling extremely tired.
how many people die from the flu each year?
I'm not sure on exact numbers for recent times, but back in 1918 there was a Spanish influenza pandemic that killed 50-100 million people.