Covaxin is 77.8% effective against symptomatic Covid: reading interim trial data
The Indian Express Delhi|November 12, 2021
INTERIM DATA FROM a phase 3 trial of the Covid-19 vaccine Covaxin, developed in India by Bharat Biotech, show that two doses offer 77.8% protection against symptomatic Covid.
ANURADHA MASCARENHAS

INTERIM DATA FROM a phase 3 trial of the Covid-19 vaccine Covaxin, developed in India by Bharat Biotech, show that two doses offer 77.8% protection against symptomatic Covid. The findings have been published in The Lancet. It comes days after Covaxin received emergency use approval from the World Health Organization (WHO) for people aged 18 and older.

Covaxin, or BBV152, is an inactivated whole virion vaccine formulated with a novel adjuvant and administered in a two-dose regimen, 28 days apart.

The trial & findings

The study was funded by Bharat Biotech International Limited and the Indian Council of Medical Research (ICMR). The trial took place between November 16, 2020, and May 17, 2021. It included 25,798 adult participants, of whom 24,419 adults were randomly assigned to receive two doses of the vaccine (12,221) or a placebo (12,198). The participants received the doses in 25 hospitals across the country.

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