Antibody titers among healthcare workers for coronavirus disease 2019 at 6 months after BNT162b2 vaccination.
Kurashima Kazuyoshi, Numano Tsuyoshi, Yoshino Atsuki, +4 more·Vaccine
BACKGROUND: Antibody levels decrease substantially at 6 months after the BNT162b2 vaccine. The factors influencing titer of antibodies against severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) among healthcare workers for coronavirus disease 2019 (COVID-19) is unclear. METHODS: We conducted a 6-month l…