Why you need one vaccine for measles and many for the flu

21 mayo 2015

While the influenza virus mutates constantly and requires a yearly shot that offers a certain percentage of protection, old reliable measles needs only a two-dose vaccine during childhood for lifelong immunity. A new study has an explanation: The surface proteins that the measles virus uses to enter cells are ineffective if they suffer any mutation, meaning that any changes to the virus come at a major cost.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/Wu8Fxz7-BHM/150521133628.htm

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