SAN FRANCISCO -- Another COVID-19 vaccine -- AstraZeneca -- is poised to arrive in the U.S., bringing a fourth option for Americans. Each vaccine is administered slightly differently, some can result ...

SAN FRANCISCO -- Herculean efforts by scientists and physicians around the world have resulted more than 50 experimental COVID-19 vaccines currently in global clinical trials. The focus in the U.S.

AstraZeneca and Oxford University announced on Monday that they had developed a new Covid-19 vaccine with an efficacy rate of 70 to 90 percent. Trials indicated the vaccine could prevent 70 percent of ...

Nov 9 (Reuters) - An AstraZeneca (AZN.L), opens new tab executive said he felt encouraged by "incredibly promising" COVID-19 vaccine trial data unveiled by Pfizer and its German partner BioNTech, ...

Nov 23 (Reuters) - AstraZeneca (AZN.L), opens new tab said on Monday its vaccine for the novel coronavirus could be around 90% effective without any serious side effects, giving the world another ...