>CDC makes a guess for what goes into the next season's flu shot and they're only ~50% correct. I hear this argument a lot and it doesn't make sense to me. If

>CDC makes a guess for what goes into the next season's flu shot and they're only ~50% correct. I hear this argument a lot and it doesn't make sense to me. If the CDC predicts strain A will be dominant and vacinates against it, shouldn't we expect strain A to be supressed?