Many countries around the world have seen a sharp rise in COVID-19 cases since the beginning of October due to the second wave of the pandemic. A decline in the antibody response to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which was reported exclusively in the early month, increases the risk of reinfection for convalescent individuals. There is a current need to follow the maintenance of specific antibodies against SARS-CoV-2.
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Peng et al. (2021) studied this question.
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