SOURCE: https://www.foxnews.com/health/covid-19-reinfection-uk-study
“The SIREN study from Public Health England’s (PHE) was performed among roughly 20,000 health care professionals and it found that only 44 participants of 6,614 who had COVID-19 antibodies upon recruitment experienced “possible” reinfection — representing an 83% less chance of infection compared to those without antibodies. The study was conducted between June 18 and Nov. 24. Antibody infection lasted for about five months, on average, from when participants were first infected, SIREN found.”
“We found that COVID-19 antibodies provide 83% protection against reinfection for at least 5 months.”