Omicron

Says overall global risk "assessed as very high" Urges member states to vaccinate, shore up health systems "Uncertainties" on degree of vaccine immunity Tedros: shows how "perilous and…

While PCR tests can detect infection with Omicron, studies are looking to whether the Covid-19 variant of concern has any impact on other test types, the WHO said Sunday. "The widely-used…

The new Covid variant Omicron has many more mutations than the Delta variant, according to a first "image" of this new variant initially detected in South Africa, produced and published by…