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No. This disaster is really exclusively due to extraordinary stupidity. The vaccines you compare are very different. The measles vaccine is a live one (which is
by rscho 7y ago
No. This disaster is really exclusively due to extraordinary stupidity. The vaccines you compare are very different. The measles vaccine is a live one (which is part of the reason why it worries people) and is very efficient. Pertussis has always been only 60% efficient due to the complexity of the germ which is a bacteria, not a virus. The flu virus is a very special case due to its rapid mutation and seasonal activity, which is the main reason why it's a challenge. This does not contradict the herd immunity principle, because the problem is precisely that the herd immunity threshold is not achieved in a reliable manner in the population, plus some stochastic failure risk depending on the particular case.
- magduf 7y ago>The flu virus is a very special case due to its rapid mutation and seasonal activity, which is the main reason why it's a challenge. Exactly. The flu and the common cold viruses are different from most others, which is why we don't have a cold vaccine and our flu vaccine is only good for that season's flu (maybe). The flu and cold mutate very rapidly and constantly, whereas those other viruses don't.