Pfizer COVID-19 vaccine is 90% effective for at least 6 months and protects against South Africa variant, study shows Karen Weintraub, USA TODAY
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Six months after getting a second dose of the Pfizer-BioNTech vaccine as part of a 46,000-person clinical trial, volunteers remained more than 90% protected against symptomatic COVID-19 and even better protected against severe disease, a new company study found. © Rick Bowmer, AP Allison Oler, 17, receives her Pfizer vaccination, Wednesday, March 24, 2021, in Sandy, Utah. All adults in Utah aged 16 and older became eligible to receive COVID-19 vaccinations Wednesday. (AP Photo/Rick Bowmer)
Out of 927 trial participants who fell ill with COVID-19 more than a week after their second dose, only 77 had received the active vaccine, compared with 850 who got a placebo.
Pfizer COVID-19 vaccine is 90% effective for at least 6 months and protects against South Africa variant, study shows
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Pfizer COVID-19 vaccine is 90% effective for at least 6 months and protects against South Africa variant, study shows
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Pfizer and Moderna vaccines 90% effective in preventing COVID, says US
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