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Test tube labelled "Covid-19 Omicron variant test positive" is seen in this illustration picture taken 15 January, 2022. PHOTO: REUTERS/Dado Ruvic/Illustration
Coronavirus chronicle

Covid is less severe with Omicron than Delta, US study suggests

The lower Covid-19 disease severity during the Omicron period is likely related to higher vaccination coverage

A healthcare professional administers a booster vaccine at a coronavirus disease (Covid-19) pop-up vaccination centre at Wembley Stadium in London, Britain, December 19, 2021. Photo : Reuters
USA

Natural immunity more potent than vaccines during US Delta wave: study

Illustration: Collected
Covid-19 in Bangladesh

Covid-19: 10 more districts flagged 'red zones' as cases keep surging 

Omicron less severe than Delta but still poses danger for unvaccinated: WHO
Coronavirus chronicle

Omicron less severe than Delta but still poses danger for unvaccinated: WHO

A doctor shows vials of Biontech-Pfizer's Comirnaty vaccine against Covid-19 at the Institute for Health and Food Safety of Zenica, Bosnia and Herzegovina, December 16, 2021. Photo :Reuters
Coronavirus chronicle

Omicron evades immunity better than Delta, Danish study finds

Representational image.(HT Photo)
Coronavirus chronicle

Case data, vaccine news mark small victories in Omicron battle

A logo is pictured on the headquarters of the World Health Orgnaization (WHO) in Geneva, Switzerland, June 25, 2020. Photo :Reuters
Coronavirus chronicle

WHO: still too soon to say if Omicron more transmissible than Delta

Photo: Collected
Coronavirus chronicle

Lower risk of hospitalisation with Omicron versus Delta: South African study

A nurse tends to a COVID-19 patient during a tour of SSM Health St. Anthony Hospital's intensive care unit (ICU) amid the coronavirus disease (COVID-19) pandemic in Oklahoma City, Oklahoma, U.S., August 24, 2021. REUTERS/Nick Oxford
Coronavirus chronicle

US crosses 50 million Covid-19 cases as Delta dominates amid Omicron emergence

Representational photo.
Coronavirus chronicle

Delta still dominates say experts urging third jab

World Health Organization (WHO) Chief Scientist Soumya Swaminathan attends a press conference organised by the Geneva Association of United Nations Correspondents (ACANU) amid the Covid-19 outbreak, caused by the novel coronavirus, at the WHO headquarters in Geneva Switzerland July 3, 2020. Photo :Reuters
Coronavirus chronicle

WHO's top scientist says Omicron could displace Delta

Syringes with needles are seen in front of a displayed stock graph and words "Omicron SARS-CoV-2" in this illustration taken, November 27, 2021. Photo :Reuters
Coronavirus chronicle

Omicron variant could outcompete Delta, South African disease expert says

People wait in line to undergo the coronavirus test at a temporary testing site set up at City Hall Plaza in Seoul, South Korea, November 22,2021. Photo :Reuters
Coronavirus chronicle

Analysis: Scientists ask whether Omicron can outrun Delta