Tag: COVID-19 reinfection

1. Vaccinated individuals reported fewer SARS-CoV-2 infections and a lesser proportion of cases were symptomatic compared to the unvaccinated cohort. 2. BNT162b2 mRNA vaccine showed an effectiveness of 70% 21 days after a single dose. Evidence Rating Level: 2 (Good)  Study Rundown: The BNT162b2 mRNA (Pfizer-BioNTech) and ChAdOx1 nCoV-19 adenoviral (Oxford-AstraZeneca) COVID-19...
1. Previous infection from SARS-CoV-2 was linked to an 84% lower incidence of reinfection. 2. Median interval between primary infection and reinfection of COVID-19 was greater than 200 days. Evidence Rating Level: 2 (Good) Study Rundown: While it has been suggested that a history of SARS-CoV-2 infection confers protection against subsequent infection,...
1. Prior infection with SARS-CoV-2 in the first wave (i.e. before June 2020) was linked to significant protection against reinfection in the second wave in the general population. 2. Protection from repeat SARS-CoV-2 infection was relatively weaker in older populations. Evidence Rating Level: 2 (Good) Study Rundown: Little is known about the...