Sapkal G, Srivastava RK, Dwivedi G, Sahay RR, et al. Immune responses against different variants of SARS-CoV-2 including omicron following six months of administration of heterologous prime-boost COVID-19 vaccine. J Travel Med 2022 Mar 4. pii: 6542352. doi: 10.1093.
PMID: 35244698