What is a COVID-19 vaccine ‘breakthrough’ case?

by Jeremy

[ad_1In studies, the two-dose COVID-19 vaccines by Pfizer and Moderna were around 95% effective at preventing illness, while the one-shot Johnson & Johnson shot was 72% effective, though direct comparisons are difficult. So while the vaccines are very good at protecting us from the virus, it’s still possible to get infected with mild or no symptoms or even get very sick. If you end up getting sick despite vaccination, experts say the shots help reduce the severity of the illness — the main reason to get vaccinated.

But the understanding of how vaccinated people who are infected might spread the virus to others is changing.

The agency recently cited the data in updating its guidance to say vaccinated people should go back to wearing masks indoors in areas where the virus is surging.

It is concerning enough that we feel like we have to act,” said CDC Director Dr. Rochelle Walensky.

Still, health experts say vaccines provide strong protection against serious illness. In the U.S., people who weren’t vaccinated make up nearly all hospitalizations and deaths from COVID-19. The AP is answering your questions about the coronavirus in this series. Submit them at: [email protected] Read more here:

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