"Our analysis suggests that the intrinsic severity of the Omicron variant may be as severe as previous variants," the researchers claimed in the pre-print study, meaning not yet peer-reviewed.
According to the study, PCR tests carried out on approximately two million Danes affected primarily by Omicron's sub-types BA.1 and BA.2 revealed that "67 cases in which the same individual had become infected twice at a 20-60-day interval where both infections were due to Omicron sub-types".
According to a study led by researchers at the University of Hong Kong, Omicron spreads 70 times faster than Delta variant.
According to the Daily Mail, King's College London scientists estimate 160,000 people were falling ill with Covid every day in the week ending January 26, compared to 145,000 in its previous report.
This emphasises the need for an Omicron-specific vaccine strategy, said the study.
Till now, the hospitals of Bihar were sending samples of Covid-19 patients to the NCDC lab in Delhi to check for the virus strain.
A study by a consortium of US and Japanese scientists on hamsters and mice found those infected with Omicron had less lung damage, lost less weight and were less likely to die than those who had other variants, the Daily Mail reported.
Three of the new cases were travellers who arrived from "at risk" countries while nine were from other countries.
For the third consecutive day, the state reported a massive spike in Covid-19 cases and suspects whose samples have been sent for genome sequencing.
The samples of these people, who returned to the state's industrial hub Indore from different countries, were taken between December 17 and 21, according to officials.
