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How can physicians distinguish between COVID-19 persistence and SARS-CoV-2 reinfection? Coronavirus disease 2019 (COVID-19) is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. The presence of antibodies against SARS-CoV-2 in individuals who contracted COVID-19 has been well documented. Research suggests that in the majority of cases, anti-SARS-CoV-2 antibodies can persist for six months or more in those who recover from COVID-19. However, reinfection has also be observed in many individuals across all age groups. Further, the severity of the infection was also...