February 22, 2022. Infection Rate Difference Between People Who Had COVID-19 and People Who Did Not

in #hive-1484413 years ago

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This article, published in February 2021, shows a large multi-center prospective study done in 2020 in England. At enrollment, participants were assigned to either the positive cohort ( people who had COVID-19-antibody positive or prior PCR/antibody test positive) or negative cohort (people who never had COVID-19 antibody negative, not previously known to be PCR/antibody positive). Participants underwent regular SARS-CoV-2 PCR and antibody testing (every 2-4 weeks) and completed frequent questionnaires on symptoms and exposures.

The incidence of positive COVID-19 cases per 100,000 person days between June and November 2020 was 3.2 reinfections in the positive cohort, compared with 22.4 infections in the negative cohort.

A prior history of SARS-CoV-2 infection was associated with an 83% lower risk of infection, the observed time after original infection was 5 months. This study clearly shows the importance of a history of prior infection when evaluating the risk of a new infection and the need for vaccination. Keep in mind that this study was done during 2020

Any information or statement present in this post does not replace your health care provider’s advice or treatment. This blog does not provide medical advice, prescribe medications or therapies, or diagnose conditions, it only expresses an opinion. If you have a health-related question or condition, confer with your healthcare provider.