The suggestion by head of China's Center for Disease Control and Prevention marks the first time a top Chinese expert has publicly alluded to the relatively low efficacy of the country's vaccines.
AstraZeneca, whose vaccine has not been approved in the United States, said it will work with President Joe Biden's administration to find an alternative site to produce its vaccine.
Phase 3 trials carried out on 2,260 adolescents in the US "demonstrated 100 percent efficacy and robust antibody responses," the companies say.
The GAVI and WHO-led COVAX is facing a shortage as India’s Serum Institute has diverted supplies to meet domestic needs.
Turkish Foreign Minister Mevlut Cavusoglu meets with his Chinese counterpart Wang Yi on 50th anniversary of Ankara and Beijing establishing diplomatic ties.
Just hours after AstraZeneca released results from its US trials promising high efficacy against Covid-19, the US National Institute of Allergy and Infectious Diseases issued an unusual public statement casting doubts over the recency of the data.
President Frank-Walter Steinmeier presented the Order of Merit to Ozlem Tureci and Ugur Sahin, whose families were migrants of Turkish origin, at a ceremony held at the Bellevue Palace, which was also attended by Chancellor Angela Merkel.
Thailand announces plans to go ahead with AstraZeneca's Covid-19 vaccine despite other countries suspending its use over safety fears.
AstraZeneca says it has found no evidence indicating its vaccine caused sporadic blood clots after reviewing safety data of more than 17 million people vaccinated in UK and EU.
Coronavirus has killed more than 2.6 million people and infected over 120 million others worldwide. Here are the latest developments for March 14:
Coronavirus has killed more than 2.6 million people and infected over 119 million others worldwide. Here are the latest developments for March 13:
Coronavirus has killed more than 2.6M people and infected almost 119M worldwide. Here are the latest developments for March 12:
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