In early 2015, medias reported that the flu vaccine had had an efficacy of 0%. Scary stuff.
And it was true : the flu vaccine, for that particular year, was ineffective.
Because of news like that, people wonder every year if it’s worth getting a flu shot. It’s a fair question.
But if you’re like me, to really understand what’s going on, you need explanations that involve swordfights, weird monsters and people getting thrown off castle walls.
So, there you go.