A single dose of one of the two-shot COVID-19 vaccines prevented an estimated 95% of new infections among healthcare workers two weeks after receiving the first dose, according to a study published Wednesday by JAMA Network Open found.
The first dose of the Moderna vaccine was 78% effective at preventing new cases just one week after clinical staff were inoculated, the data showed.
This study demonstrated an association between receipt of mRNA-1273 vaccine and a reduction in SARS-CoV-2 infection in HCWs beginning 8 days after dose 1,” according to the study report. “These real-world findings reflect vaccination solely with mRNA-1273 and are consistent with aggregated data for BNT162b2 and mRNA-1273 in HCWs.4–6 The first-dose risk reduction of 95% after day 14 highlights the potential for vaccination with mRNA-1273 to rapidly mitigate surges of vaccine-sensitive SARS-CoV-2 infection in HCWs.”
Learn full study report here:
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