Prior exposure to SARS-CoV-2 does not guarantee a high level of antibodies, nor does it guarantee a robust antibody response to the first vaccine dose. This directly contradicts the assumption that contracting COVID will naturally make someone immune to reinfection. The findings further support vaccination (and two doses), even for people who have contracted the virus previously.
from Zee News :Zee News - Health https://ift.tt/3Dycren
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