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Does exposure to SARS-CoV-2 produce immunological memory? If so, how long do those “memories” last, and what are the implications on the development and longevity of vaccine-induced protection?
Two COVID-19 vaccines have received emergency use authorization (EUA) in the U.S. But open questions remain, including the durability of immunity and how to predict rare, severe adverse reactions.
Screening determines whether an asymptomatic person is likely to have or develop disease, while diagnostics identify the cause of a patient’s illness - a crucial difference in the context of COVID-19.