It involved genome sequencing study of 511 breakthrough (post vaccination) infections from 17 states/UTs and was led by ICMR’s National Institute of Virology.
Tribune News Service
New Delhi, July 16
The Indian Council of Medical Research (ICMR) today said the majority of people who contracted Covid after receiving their vaccination were infected by the Delta variant, the predominant variant that drove the deadly second wave.
All cases of breakthrough infection, however, gained protection from both hospitalisation and deaths on account of Covid inoculation.
Variants at play
- Across South, West, East and North-West regions of India, the predominant breakthrough infections were mainly from Delta and then Kappa variant.
- The North and central regions of India reported such infections mainly due to Alpha, Delta and Kappa variants.
“The majority of the clinical cases in the breakthrough were infected with the Delta variant and only 9.8 per cent cases required hospitalisation while fatality was observed in only 0.4 per cent cases. This clearly suggests that the vaccination does provide reduction in hospital admission and mortality,” the ICMR’s researchers said in a study.
It involved genome sequencing study of 511 breakthrough (post vaccination) infections from 17 states/UTs and was led by ICMR’s National Institute of Virology.
The study reinstates the dominance of the Delta variant and shows that 86 per cent (443) of the vaccinated subjects were found infected by the Delta variant.
Across South, West, East and North-West regions of India, the predominant breakthrough infections were mainly from Delta and then Kappa variant. The North and central regions of India reported such infections mainly due to Alpha, Delta and Kappa variants. In the study, 67 cases (9.8 per cent) required hospitalisation and death was observed in only three cases (0.4 per cent).