British pharmaceutical giant, whose coronavirus vaccine faces European safety doubts, announces it will provide 700,000 doses of a potential treatment for virus

Germany, France, and Italy become latest EU nations to announce temporary ban; European Medicines Agency tries to allay concerns, saying no known health risks

Germany, France, Denmark and others have paused their inoculation campaigns over blood clot concerns, but WHO says there have been few cases and no confirmed link to shot

Five countries have now suspended rollouts of AstraZeneca vaccines over concerns about post-jab blood clots; company says no evidence of danger

Health official says that while there's no conclusive link between vaccine and cases, temporary hold put in place as precaution; Denmark, Norway, Iceland have taken similar steps

Countries prod Biden administration to release supply of AstraZeneca vaccines, noting America has enough doses to immunize its entire population by end of July

Italy returns to lockdown as infections surge; Austria alleges some countries signed 'secret contracts' with vaccine makers; US, Japan, India, Australia form joint initiative

European Medicines Agency tries to allay concerns, saying no known health risks with shot

Bloc of 27 countries started vaccine drives at end of December, but has been progressing at far slower pace than some rich nations, including US, Israel and former member Britain

Volodymyr Zelenskiy gets shot in bid to increase public willingness to be inoculated against coronavirus