EXPLAINER-How worried should we be about blood clots linked to AstraZeneca and J&J vaccines?
(Adds details of U.S. move to pause J&J vaccinations following rare clotting reports)By John Miller and Ludwig BurgerZURICH, April 13 (Reuters) - U.S. regulators have recommended pausing the use of Johnson & Johnson's COVID-19 vaccine, as they inv...
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