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SARS-CoV-2 immunity due to prior infection or vaccination is similar, study says A new study published on the medRxiv preprint server finds that the rate of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) reinfection is low following one episode of the infection. Breakthrough infections were also found to be similarly rare after vaccination with a messenger ribonucleic acid (mRNA) vaccine, say the researchers. Background SARS-CoV-2, which was originally detected in Wuhan, China in December 2019, is the virus responsible for the devastating coronavirus disease 2019 (COVID-19). The impact of COVID-19, along with the comprehensive restrictions that have been placed on social interactions, has forced businesses and schools to close. As a result, millions of people around the world became unemployed, which has caused the global economy to suffer tremendously.

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