(Reuters) - La contamination par le variant Omicron renforce l'immunité contre Delta, d'après une étude menée par des scientifiques sud-africains, qui ont examiné 33 personnes vaccinées et non ...

Differing strains of the coronavirus continue to appear around the world and a new COVID-19 variant, the so-called "Delta" variant, has health experts concerned. The variant, otherwise known as B.1617 ...

LOS ANGELES - As cases of the novel coronavirus and its delta variant continue to increase, a new projection model shows there are no signs of the hyper-contagious variant slowing down — foreshadowing ...

The US has done an about-face on its approach to the coronavirus pandemic this week. Masks are back, vaccine mandates are looming, and officials are sounding more worried than they have in months.

LOS ANGELES (KABC) -- While overall COVID-19 rates remain relatively low in Southern California amid continuing vaccination efforts, officials are increasingly worried about a growing threat from the ...

Many of us have heard about the different variants of the SARS-CoV-2 virus that was reported for the first time in Wuhan, China, in December 2019 and has spread throughout the world, among them the ...

The Centers for Disease Control and Prevention listed the COVID-19 delta variant as one of its "variants of concern" (VOCs) on June 15. According to the CDC, VOCs can be more contagious, more ...

While the delta COVID-19 variant is the dominant strain in the U.S., it’s now officially the dominant strain worldwide “by far,” officials from the World Health Organization said during a Sept. 21 ...

We all watched the news: a new variant of the SARS-CoV-2 virus was found in India in October 2020, sparking a devastating second wave with more than 400,000 daily infections. This mutation called ...