NOVA

How Long Does Covid-19 Immunity Last?

Clip: Season 48 | 8m 43s | Video has closed captioning.

A person who has been vaccinated against COVID-19 will have a slightly different immune response to the coronavirus than someone who was previously infected, researchers say. How long does immunity last—and is it all about antibodies?

Aired: 11/09/21

Rating: NR

Problems Playing Video? | Closed Captioning

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