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 Several provinces are tightening public health measures today to curb rising COVID-19 infections, with British Columbia officials set to announce new provincial travel restrictions and two Ontario hot spots poised to see workplace closure orders to control outbreaks come into effect.
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 It was nothing short of a miracle when it became clear that scientists had developed several effective vaccines against Covid-19 in less than a year. Announcements last week from European Union and British drug regulators finding a possible link between AstraZeneca's Covid-19 shot and rare blood clots, however, have been a real low point in the pandemic.
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