United States reports low rate of new infections in people who have been vaccinated

19/04/2021

The U.S. Centers for Disease Control and Prevention has identified approximately 5,800 SARS-CoV-2 infections in
the approximately 77 million people in the country who had been fully vaccinated. The 5,800 cases, representing
0.008% of those who had been fully vaccinated, included 74 patients who died of COVID-19, and 396 who required
hospitalization. Just under a third (29%) of the identified cases were asymptomatic, approximately twice the rate
observed in un-vaccinated patients. Close to two-thirds (65%) of the cases occurred in women, although this figure
may simply reflect a greater propensity among women to be tested. Just over 40% of infections occurred in people
aged 60 and older. It is important to note that the vast majority of the fully vaccinated population was considered to
have been at high risk of infection from the virus. This information could confirm a high degree of effectiveness in
the field, consistent with the results of clinical studies of the Pfizer-BioNTech and Moderna vaccines.


Source: Dyer O. Covid-19: U.S. reports low rate of new infections in people already vaccinated. BMJ
2021;373:n1000.

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