India’s largest yet data analysis of the so-called breakthrough infections after inoculation with Covishield [AstraZeneca] has found that 16 in every 1,000 fully vaccinated healthcare workers developed Covid-19 infections, about threefold the incidence observed in a US study after Pfizer or Moderna doses.
A team of doctors at the Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, has documented 48 Covid-19 infections among 3,000 healthcare workers who had completed two weeks after both doses of Covishield before they tested Covid-positive.
“The incidence of breakthrough infection was 1.6 per cent, the median time from receipt of the second dose to the breakthrough infection was 29.5 days,” Venkatamaha Laksmi Pinnaka and his colleagues at PGIMER wrote in their report in The New England Journal of Medicine.
