If people are cancerned about fatal disease, why does nobody proactively prevent catching the flu, given the stats of yealy deaths from influenza?

This question has been asked and answered many, many times. By now, asking this kind of question shows either an inability to search, to compare two different numbers for lethality, communicability or preventability; or this is classic false-dilemma crap from the anti-science crowd.

Your answers are found trivially via google.