Ministry of Health and Family Welfare, GOI. Government of India-COVID-19 INDIA. Available from: https://www.mohfw.gov.in/">https://www.mohfw.gov.in/">https://www.mohfw.gov.in/. [Last Accessed on 10-10-2024].

Arankalle V, Kulkarni-Munje A, Kulkarni R, et al. Immunogenicity of two COVID-19 vaccines used in India: An observational cohort study in health care workers from a tertiary care hospital. Front Immunol 2022; 13, 928501.

Chavda VP, Balar P, Vaghela D, et al. Omicron Variant of SARS-CoV-2: An Indian Perspective of Vaccination and Management. Vaccines 2023; 11(1):160.

Kang YM, Minn D, Lim J, et al. Comparison of antibody response elicited by ChAdOx1 and BNT162b2 COVID-19 vaccine. J Korean Med Sc. 2021; 36(46): e311.

Zhao W, Chen W, Li J, et al. Status of humoral and cellular immune responses within 12 months following CoronaVac vaccination against COVID-19. mBio. 2022;13(3):e0018122.

Choudhary HR, Parai D, Chandra Dash G, et al. Persistence of antibodies against spike glycoprotein of SARS-CoV-2 in healthcare workers post double dose of BBV-152 and AZD1222 vaccines. Front Med (Lausanne). 2021; 8:778129.

Singh AK, Phatak SR, Singh R, et al. Antibody response after first and second-dose of ChAdOx1-nCOV (CovishieldTM®) and BBV-152 (CovaxinTM®) among health care workers in India: The final results of cross-sectional coronavirus vaccine-induced antibody titre (COVAT) study. Vaccine. 2021;39(44):6492-6509.

Krammer F, Srivastava K, Alshammary H, et al. Antibody responses in seropositive persons after a single dose of SARS-CoV-2 mRNA vaccine. N Engl J Med. 2021;384(14):1372-1374.

Tejedor Vaquero S, de Campos-Mata L, Ramada JM, et al. The mRNA-1273 vaccine induces cross-variant antibody responses to SARS-CoV-2 with distinct profiles in individuals with or without pre-existing immunity. Front Immunol. 2021; 12:737083.

Barthwal S, Angel B, Angel A, et al. Neutralizing possibilities of whole virion and mRNA vaccine triggered antibodies of Wuhan strain of SARS-CoV-2 with receptor binding domains of spike proteins of Delta and Omicron strains. Asian Pac J Trop Med. 2023; 16(2), 92-94.