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Maria Cheng

WHO: Delta variant is 'most transmissible' identified so far

LONDON – The head of the World Health Organization said the COVID-19 delta variant, first seen in India, is “the most transmissible of the variants identified so far,” and warned it is now s...

Why countries are halting the AstraZeneca shot

LONDON – At least a dozen countries including Germany, France, Italy and Spain have now temporarily suspended their use of AstraZeneca’s coronavirus vaccine after reports last week that some...

Expert says origins of pandemic could be known in few years

LONDON – The global community will find out “fairly soon, within the next few years” what started the coronavirus pandemic, a key member of a World Health Organization-led investigation into...

UN authorizes AstraZeneca’s COVID vaccine for emergency use

TORONTO – The World Health Organization has granted an emergency authorization to AstraZeneca’s coronavirus vaccine, a move that should allow the U.N. agency’s partners to ship millions of d...

UN: Europe’s pandemic restrictions are absolutely necessary

LONDON – The head of the World Health Organization’s Europe office said the exponential surge of coronavirus cases across the continent has warranted the restrictive measures being taken, ca...

UN cautions that virus plasma treatment still experimental

LONDON – The World Health Organization on Monday cautioned that using blood plasma from COVID-19 survivors to treat other patients is still considered an experimental therapy, voicing the co...

UK coronavirus vaccine prompts immune response in early test

LONDON – Scientists at Oxford University say their experimental coronavirus vaccine has been shown in an early trial to prompt a protective immune response in hundreds of people who got the ...

UN says Ebola in Congo still qualifies as global emergency

LONDON – The World Health Organization says the ongoing Ebola outbreak in Congo still warrants being classified as a global emergency, even though the number of confirmed cases has slowed in...

2nd Ebola vaccine to be used in Congo, as UN efforts slammed

LONDON – The World Health Organization on Monday announced Congo will start using a second experimental Ebola vaccine, as efforts to stop the deadly outbreak are stalled and Doctors Without ...

UN: Possible to eradicate malaria, but probably not soon

LONDON – The World Health Organization says it’s theoretically possible to wipe out malaria, but probably not with the imperfect vaccine and other control methods being used at the moment. ...

Study challenges health benefits of moderate drinking

LONDON – It might just be enough to kill your buzz: A new study challenges the idea that a drink or two a day could actually be good for you. In a study conducted in China, the re...

Woman likely spread Ebola a year after infection, doctors say

LONDON – A Liberian woman who probably caught Ebola in 2014 may have infected three relatives a year after she first fell sick, doctors reported in a study published Monday. There...