International travel had ‘major impact’ on early COVID deaths: Study

Jessica Wong

International travel had the biggest impact on death rates for countries that were worst hit during the first wave of the coronavirus pandemic, a new study suggests. Researchers from the University of Aberdeen examined a range of factors including border arrivals, population density, the percentage of people living in urban areas, age, […]

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Comparing coronavirus vaccines; Here's how they work

(CNN) — Data on vaccines being tested by Johnson & Johnson and Novavax came out last week, and makers of AstraZeneca‘s vaccine and Russia’s Sputnik V vaccine published some long-awaited details about their shots on Tuesday. All indicate high efficacy against the virus, even though they take very different approaches. […]