Over 86 p.c of breakthrough infection caused by Delta variant: ICMR

677 clinical samples collected from 17 States and UTs

A majority -- over 86 per cent -- of the breakthrough infection after COVID-19 vaccination have been caused by the Delta variant, with hospitalisation of 9.8 per cent of such cases and fatality observed in 0.4 per cent of cases, according to the results of a nationwide study conducted by the Indian Council of Medical Research (ICMR) on breakthrough COVID-19 infection. A breakthrough infection is a case of illness in which a vaccinated individual becomes sick from the same illness that the vaccine is meant to prevent. For the study, “Clinical characterisation and Genomic analysis of COVID-19 breakthrough infections during second wave in different States of India’’, ICMR collected 677 clinical samples of individuals who have been partially or fully vaccinated but contracted the infection.