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. 2021 May 20;384(20):1962-1963.
doi: 10.1056/NEJMc2102153. Epub 2021 Mar 23.

Early Evidence of the Effect of SARS-CoV-2 Vaccine at One Medical Center

William Daniel  1 , Marc Nivet  1 , John Warner  1 , Daniel K Podolsky  1
Affiliations

Early Evidence of the Effect of SARS-CoV-2 Vaccine at One Medical Center

William Daniel et al. N Engl J Med. .
No abstract available

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Figures

Figure 1
Figure 1. Early Results of SARS-CoV-2 Vaccination.
Panel A shows the percentage of persons with new SARS-CoV-2 infection among 23,234 employees of the University of Texas Southwestern Medical Center (UTSW) who were eligible to receive SARS-CoV-2 vaccine, stratified according to vaccination status from December 15, 2020, through January 28, 2021. Vaccination status was determined at the time of the first SARS-CoV-2–positive test on or after December 15; if no infection was detected between December 15 and January 28, the vaccination status on January 28 was used. Nonvaccinated persons were those for whom there was no record of vaccine received at UTSW, partially vaccinated persons were those who had received one dose or who had received the second dose of the BNT162b2 vaccine less than 7 days before the index date or the second dose of the mRNA-1273 vaccine less than 14 days before the index date, and fully vaccinated persons were those who had received the second dose of the BNT162b2 vaccine at least 7 days before the index date or the second dose of the mRNA-1273 vaccine at least 14 days before the index date. 𝙸 bars denote 95% confidence intervals. Panel B shows that the number of positive tests was projected to increase without vaccination (black line). The shaded area denotes the 95% confidence interval. The actual number of positive tests (black dots) decreased from January 9 (blue line) onward (25 days after the initiation of employee vaccinations).
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References

    1. Ceylan Z. Estimation of COVID-19 prevalence in Italy, Spain, and France. Sci Total Environ 2020;729:138817-138817. - PMC - PubMed