Variant Common in U.S.; Ontario Declares Emergency: Virus Update Bloomberg 15 mins ago Bloomberg News (Bloomberg) -- The European Union failed to unify in responding to links between AstraZeneca Plc’s Covid-19 vaccine and a rare type of blood clots. EU Health ministers say they’ll continue talks on the issue. The variant of the coronavirus first found in the U.K. has overtaken the initial form of the virus in the U.S. and is now the country’s most common strain. President Joe Biden will offer vaccine shipments to all of the nation’s community health centers. To the north, Canada’s largest province, Ontario, declared a state of emergency.