The vaccine does have risks, though. Some people have allergic reactions, and it’s possible that the flu vaccine can induce Guillaine-Barré Syndrome, a fun little condition that causes weakness or even paralysis. Anti-vaccine groups tend to bring up the issue of thimerosal, a mercury compound that’s used as a preservative in vaccines, which these groups link to autism, among other adverse reactions. There’s no real evidence of this, though, and all things considered, the rewards probably outweigh the risks.
It won’t always work, but it can still save lives
The effectiveness of the vaccine is different every year, and this isn’t a matter of a few percentage points in variation. Over the past decade, the vaccine effectiveness ranged between 21% and 60, which, like, 21%? Come on! Plus, concerns have been raised recently that those the vaccine becomes less effective when you get it every year. So… nearly an 80% failure rate combined with reduced effectiveness over time? What are are these public health professionals smoking?