Mapping person-to-person variation in viral mutations that escape polyclonal serum targeting influenza hemagglutinin.

Abstract excerpt

A longstanding question is how influenza virus evolves to escape human immunity, which is polyclonal and can target many distinct epitopes. Here, we map how all amino-acid mutations to influenza's major surface protein affect viral neutralization by polyclonal human sera. The serum of some individuals is so focused that it selects single mutations that reduce viral neutralization by over an order of magnitude....

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