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New Research Shows COVID Vaccines Still Protect Against Severe Disease

August 25, 2021


Two new government reports confirm that while the power of coronavirus vaccines wanes over time, they still protect strongly against severe disease, even as the highly contagious Delta variant overtakes America.

One study that looked at Los Angeles County reaffirmed that fully vaccinated people are far less likely than unvaccinated people to be hospitalized, admitted to an intensive care unit, require mechanical ventilation or die from COVID-19. Meanwhile, a second study that followed front-line health workers for months found vaccine effectiveness against COVID-19 infection dropped from 91% to 66% once the Delta variant accounted for the majority of circulating virus, but the vaccinated were still far less likely to be infected.