Justin Trudeau vouched for the safety of Oxford University’s AstraZeneca COVID-19 vaccine as reports of blood clots prompted several other countries to temporarily ban the vaccine’s use.“At each stage of what we’ve been doing, our public health and scientific experts do inspect and analyze the vaccines and they keep collecting data on AstraZeneca and they guarantee us that all vaccines which are distributed in Canada, including AstraZeneca, are safe,” he said.Trudeau’s comments come as the world grapples with whether to use the AstraZeneca vaccine, whether it causes blood clots and how to combat those adverse side effects while still trying to clamp down on the spread of COVID-19 as fast as possible.