While I think many vaccines are beneficial, I've never quite understood the hype around the flu vaccines. Generally, the flu vaccine is less than 50% effective. In some years it was shown to actually increase your chances of getting the flu. So far, this year's flu vaccine is less than 12% (11.72%) effective in adults. I'm not sure which medical school the CDC guys went to, but even in an Honors/Pass/Fail system, <50% usually would be considered a failure.

Sources:
CDC - US Flu VE Data for 2018-2019 (https://www.cdc.gov/flu/vaccines-work/2018-2019.html)
CDC - Past Seasons Vaccine Effectiveness Estimates (https://www.cdc.gov/flu/vaccines-wor...estimates.html)