SARS-CoV-2 Exposure without Infection

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The discussion centers on the findings that close contacts of SARS-CoV-2 positive individuals can exhibit memory T cells without showing signs of infection or antibodies, suggesting that exposure alone can trigger an immune response. This raises questions about the prevalence of such occurrences in the general population. The conversation emphasizes the importance of expanding research beyond vaccine-mediated immunity to include the role of T and B cells, which may offer longer-lasting protection. The lack of focus on this area in current immunological studies is noted as a gap that needs addressing for a comprehensive understanding of immune responses to SARS-CoV-2.
morrobay
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TL;DR Summary
Close contact exposure to Sars-Cov-2 without infection.
From page 6: 'Close contacts who are Sars-Cov-2 exposed are often both NAT negative and antibody negative indicating that Sars-Cov-2 failed to establish a successful infection'. So the exposure generated memory T cells in absence of an infection. I wonder how quantitatively widespread in a population this would be ?https://www.researchgate.net/publication/350192067_Exposure_to_SARS-CoV-2_generates_T-cell_memory_in_the_absence_of_a_detectable_viral_infection
 
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