Who is Loki? Is he a chap in a green suit with a penchant for deception and depravity? Is he instead a she with blonde hair who prefers to be called Sylvie? Or could Loki be an overly sensitive alligator with horns and a taste for cats? Truth be told...
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Breakthrough deaths comprise a larger share of COVID-19 deaths amid a surge of cases nationwide. ABC News medical contributor Dr. Alok Patel explains what you need to know....
ABC News Dr. Jen Ashton breaks down BA.2 and what we should keep in mind as new variants emerge....
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Europe is facing a new round of restrictions, closing non-essential stores just days before Christmas....
At least one person in the UK has died with the Omicron coronavirus variant, the prime minister has said. Boris Johnson said the new variant was also resulting in hospital admissions, and the "best thing" people could d...
Existing vaccines should still protect people who contract the Omicron variant from severe Covid cases, a World Health Organization (WHO) official says. It comes as the first lab tests of the new variant in South Africa suggest i...
The variant was first identified in Botswana and has now been detected in more than 12 countries. It hasn't been found in the U.S. yet, but officials are making changes to prepare....
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The Pfizer and AstraZeneca coronavirus vaccines are highly effective against the variant identified in India after two doses, a study has found. Two jabs of either vaccine give a similar level of protection against symptomatic di...
India has said a new variant of the coronavirus first discovered there in March may be linked to a deadly second wave. Samples containing the "double mutant"- or B.1.617 variant - have been found in several states with ...
The UK has detected two cases of another new variant of coronavirus, the health secretary Matt Hancock says. The cases in London and north west England are contacts of people who travelled to South Africa, where the variant was d...
European Union officials will discuss later a co-ordinated response to a new, more infectious coronavirus variant in the UK, which has led many countries to impose travel bans. Germany, France and Italy are among those to suspend...
CNBC's Meg Tirrell reports on just how a Covid vaccine works, as well as the companies in the running to develop one....
A student from Central China's Hunan province will become the first Chinese student to deliver a commencement speech at Harvard University on May 26, 2016. He Jiang, a doctoral student in biology at the university, was chosen by the prestigi...
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