The thresholds, the Centre said, are test positivity of 10 percent or more in the last one week or 40 percent occupancy on oxygen supported or ICU beds. States must take “containment measures, curbs even before thresholds are reached”. New Delhi: Omicron is three times as infectious as Delta and...

Joe Biden stressed the importance of vaccinated people getting a booster and of those who have yet to be vaccinated receiving their first shot. Washington: President Joe Biden warned Thursday that the Omicron variant of the coronavirus will start to spread much more rapidly in the United States and...

All three US-authorized Covid-19 vaccines appear to be significantly less protective against the newly-detected Omicron variant of the coronavirus in laboratory testing, but a booster dose likely restores most of the protection, according to a study released on Tuesday.

UK Prime Minister Boris Johnson on Monday said at least one person infected with Omicron had died, as the country began an ambitious booster programme against the variant. “Sadly, at least one patient has been confirmed to have died with Omicron,” Johnson, who on Sunday warned of a “tidal...