2017-11-20

[public] 895K views, 17.6K likes, dislikes audio only

TED-Ed

Why do we need flu shots every year? Dig into the science of flu viruses and what makes them different from other diseases.

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All year long, researchers at hospitals around the world collect samples from flu patients and send them to top virology experts with one goal: to design the vaccine for the next flu season. But why do we need a new one every year? Vaccines for diseases like mumps and rubella offer a lifetime of protection with two shots early in life; what’s so special about the flu? Melvin Sanicas explains.

Lesson by Melvin Sanicas, directed by Andrew Foerster.

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