Since the outbreak of coronavirus disease 2019 (Covid‐19) in December 2019, caused by
the severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2), the number of …

COVID-19 vaccines are indispensable, with the number of cases and mortality still rising,
and currently no medicines are routinely available for reducing morbidity and mortality, apart …

Delhi, the national capital of India, experienced multiple severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2) outbreaks in 2020 and reached population seropositivity of> …

Importance A surge of COVID-19 occurred from March to June 2021, in New Delhi, India,
linked to the B. 1.617. 2 (Delta) variant of SARS-CoV-2. COVID-19 vaccines were rolled out …

The high transmissibility, mortality, and morbidity rate of the SARS-CoV-2 Delta (B. 1.617. 2)
variant have raised concerns regarding vaccine effectiveness (VE). To address this issue, all …

We are currently approaching three years since the beginning of the coronavirus disease
2019 (COVID-19) pandemic. SARS-CoV-2 has caused extensive disruptions in everyday …

Background Different forms of vaccines have been developed to prevent the SARS‐CoV‐2
virus and subsequent COVID‐19 disease. Several are in widespread use globally …

Background and aims There is limited data available on longitudinal humoral antibody
dynamics following two doses of ChAdOx1-nCOV (Covishield™) and BBV-152 (Covaxin™) …

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has become a
pandemic as of March 2020, creating a global crisis and claiming millions of lives. To halt …

Effectiveness of corona virus disease-19 (COVID-19) vaccines used in India is unexplored
and need to be substantiated. The present case-control study was planned to elicit the …