I can answer that aproximately.

Vaccination according to the CDC has an effective rate of around 62% from getting the specific flu mix (yes it's a mix) that they assume will infect folks in that specific region. It's a coin toss.

However they got the mix WRONG this year. So if everyone got vaccinated by influenza vaccine, it wouldn't protect anyone from the strain which is proving infectious and more dangerous.

The vaccination rate is around 37% of the USA, and is largely driven by induced vaccination. They must get vaccinated as a function of working in their jobs or school. Therefore it's not a personal choice as it has been in history.

Getting vaccinated this year, wouldn't protect you from that specific strain that is so bad. It would protect you with a 62% effective rate (we think) against the specific strains in the mix.