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Ontario will no longer give AstraZeneca COVID-19 vaccine as 1st dose due to blood clot risk
By Muriel Draaisma
Mixing Covid-19 vaccines tied to more side effects, early UK data suggests
By Jacqueline Howard
Norway should exclude J&J, AstraZeneca from vaccine scheme - panel
By Terje Solsvik & Gwladys Fouche
Slovakia suspends use of AstraZeneca COVID-19 vaccine as a recipient dies
By Robert Muller, Jason Hovet & Andrew Cawthorne