Pneumonia shots also help against viruses, including SARS CoV-2

That's crazy. Quick Boost #12.

Pneumonia shots are usually explained to patients as being protective against bacterial pneumonia, specifically that caused by Streptococcus pneumoniae.

Turns out they also help protect against other enemies like coronaviruses and influenza viruses.

So how is it possible that a vaccine against bacteria could help with viruses, too? Should you get one …