Li M, Yang J, Wang L, et al.
.
Heterologous vaccination strategy for containing COVID-19 pandemic.
Large-scale study of antibody titer decay following BNT162b2 mRNA vaccine or SARS-CoV-2 infection.
Waning Immune Humoral Response to BNT162b2 Covid-19 Vaccine over 6 Months.
Bar-On YM, Goldberg Y, Mandel M, et al.