Scientific advisers decide vaccine's benefits outweigh risk after finding 15 cases of blood clots, 3 deaths out of nearly 8 million people given the shot

Nachman Ash says that while it is expected Israelis will need further shots for protection against COVID, the timeframe is still unclear

Ten million doses were ordered, but officials now wary amid blood clot fears; legal authorities looking at reselling units to other countries

Bloc to start receiving the vaccines by end of April, providing a boost to the European Union's beleaguered immunization campaign

The two shots, based on same technology, have come under suspicion of causing very rare but serious blood clots in a handful of cases among millions vaccinated

UK, Canada, France, Germany, Italy, Belgium, Spain and the Netherlands among countries not recommending shot for younger people; officials insist benefits outweigh risks

Concern as 222 cases of thrombosis recorded among 34 million people who received shot; scientists note those injected have a 90 times higher chance of being hit by lightning

European Medicines Agency insists that the benefits of inoculation against COVID-19 from the shot outweigh the dangers; UK health body changes its policies on offering its use

Health authorities say 'no safety concerns' for study participants while organizers await data, in latest drama over embattled vaccination

'Extreme rarity' of blood-clotting events after millions of shots administered means receiving the vaccine is by far the safest choice, expert says

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