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Tag: vaccine efficacy
June 3, 2021
Vaccine Effectiveness of the BNT162b2 MRNA COVID-19 Vaccine against RT-PCR Confirmed SARS-CoV-2 Infections Hospitalisations and Mortality in Prioritised Risk Groups
[Pre-print, not peer-reviewed] Effectiveness of the Pfizer-BioNTech vaccine >7 days after the second dose ranged between 53-86% in preventing SARS-CoV-2 infection, ≥75% in preventing COVID-19 hospitalizations, and ≥89% in preventing COVID-19 deaths in a nationwide cohort study of high-risk groups in Denmark including long term care facility (LTCF) residents, individuals aged ≥65 years requiring personal…
April 27, 2021
Effectiveness of MRNA COVID-19 Vaccines against SARS-CoV-2 Infection in a Cohort of Healthcare Personnel
The COVID-19 mRNA vaccines were up to 96% effective in preventing PCR-confirmed SARS-CoV-2 infection following two doses, according a retrospective cohort study of over 45,000 US healthcare personnel. The Pfizer-BioNTech vaccine accounted for 93% of vaccinations and the Moderna vaccine accounted for 7%. The authors adjusted for age, gender, region, job, and week of vaccination…