Journal
EMERGING INFECTIOUS DISEASES
Volume 28, Issue 4, Pages 828-832Publisher
CENTERS DISEASE CONTROL & PREVENTION
DOI: 10.3201/eid2804.212037
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Antibodies against SARS-CoV-2 decrease but remain detectable for 6 months postvaccination. The duration of neutralizing titers is shorter against Delta variant compared to the wild-type virus. Out of 227 vaccinated healthcare workers, only 2 experienced mild breakthrough infections, despite 59 individuals showing serologic evidence of SARS-CoV-2 infection.
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.
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