India's Covid-19 cases multiply, vulnerable groups given vaccine boosters

Facing this rising third wave of infections, the government sent booster reminders to more than 10 million people who took their second dose of the Covaxin or Covishield shot nine months ago.

India began administering booster doses of Covid-19 vaccine to frontline workers and vulnerable elderly people on Monday, with the fast-spreading Omicron variant fuelling an almost eight-fold rise in daily infections since the start of the year.