国家地理：猪流感流行病科学
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Synopsis
介绍了超级流感病毒是如何发展、变异的，抑制新流感病毒传播必须采取迅速、复杂的对策。NGC goes inside the science of how a superflu virus develops and mutates and the quick but complex decisions that must be made when trying to contain a new flu virus on the run
