The efficacy and safety of the BNT162b2 vaccine are known, but antibodies are expected to decrease over time after vaccination. We collected blood samples from 104 fully vaccinated health care workers at 3 and 5 weeks after first vaccination and 4 months after second vaccination. Antibody titers and neutralizing antibodies were measured. In our study, both antibody titers and neutralizing antibodies increased significantly at 5 weeks after first vaccination but decreased rapidly at 4 months after second vaccination. Additionally, the results showed a significant decrease regardless of gender or age. Further studies are needed to help determine the interval of SARS-CoV-2 vaccinations.
All Keywords
【저자키워드】 antibodies, SARS-CoV-2, Neutralizing antibodies, BNT162 vaccine, vaccine immunogenicity, 【초록키워드】 neutralizing antibody, BNT162b2 vaccine, vaccination, antibody, Gender, Antibody titer, Health care worker, age, Efficacy and safety, Vaccinations, second vaccination, blood sample, help, significant decrease, first vaccination, decrease, collected, significantly, determine, expected, were measured, 【제목키워드】 BNT162b2, titer, Month,
【저자키워드】 antibodies, SARS-CoV-2, Neutralizing antibodies, BNT162 vaccine, vaccine immunogenicity, 【초록키워드】 neutralizing antibody, BNT162b2 vaccine, vaccination, antibody, Gender, Antibody titer, Health care worker, age, Efficacy and safety, Vaccinations, second vaccination, blood sample, help, significant decrease, first vaccination, decrease, collected, significantly, determine, expected, were measured, 【제목키워드】 BNT162b2, titer, Month,