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Emerg Infect Dis ; 28(4): 828-832, 2022 Apr.
Article in English | MEDLINE | ID: covidwho-1771000

ABSTRACT

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibodies decay but persist 6 months postvaccination; lower levels of neutralizing titers persist against Delta than wild-type virus. Of 227 vaccinated healthcare workers tested, only 2 experienced outpatient symptomatic breakthrough infections, despite 59/227 exhibiting serologic evidence of SARS-CoV-2 infection, defined as presence of nucleocapsid protein antibodies.


Subject(s)
COVID-19 , Antibodies, Viral , Antibody Formation , COVID-19/epidemiology , COVID-19/prevention & control , COVID-19 Vaccines , Health Personnel , Humans , SARS-CoV-2 , Vaccination
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