Colin Powell’s COVID-19 Death Followed Cancer Diagnosis, Treatment
SciCheck Digest
Former Secretary of State Colin Powell died from complications of COVID-19. Although he was fully vaccinated, he was also 84 years old and was a cancer patient who had undergone treatment for multiple myeloma — factors that put him at higher risk of a serious breakthrough illness. His death does not mean the COVID-19 vaccines don’t work, as many social media posts suggest.
All of the authorized and approved vaccines are effective at preventing symptomatic disease.
The Pfizer/BioNTech vaccine, which is the first COVID-19 vaccine to receive full approval from the Food and Drug Administration, showed a final efficacy of 91% against symptomatic illness in its phase 3 trial, meaning that under the conditions of the trial the vaccine reduced the risk of getting sick by 91%. The Moderna vaccine showed similar results in its clinical trial, with an efficacy of 94% against disease at the time of emergency use authorization.
Johnson & Johnson, which partly tested its vaccine in South Africa when the beta variant emerged, reported an efficacy of 66% in preventing moderate to severe COVID-19 and an efficacy of 85% in preventing severe or critical COVID-19.
Subsequent studies have that the vaccines are effective under real-world conditions, against the highly contagious delta variant, although they are in preventing infection and mild disease compared with earlier versions of the virus. Most studies show the vaccines in preventing serious disease, hospitalization and death from delta.
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