In Singapore early in the pandemic indicated that SARS-1-infected individuals who never ever acquired COVID-19 had protection against SARS-CoV-2 that lasted till 17 years later.
Cleveland Clinic, 19 June 2021 Even while some of the 1,359 previously infected healthcare professionals in the Cleveland Clinic system were exposed.
To more COVID-positive patients than the general population, not a single one of them contracted the virus again ten months into the pandemic.
4) Cell Medicine, July 14, 2021, Fred Hutchinson Cancer Research Center, Seattle/Emory University, Washington According to the research, the majority of patients.
Who recovered generated memory B cells, persistent polyfunctional CD4 and CD8 T cells that target various viral components, and lasting antibodies.
“Taken together, these results suggest that broad and effective immunity may persist long-term in recovered COVID-19 patients,” the investigators said.
