Scientists have been studying the effects of lockdowns during the pandemic in the hope that their findings could inform the response to future crises. They have reached some conclusions: countries that acted quickly to bring in stringent measures did best at preserving both lives and their economies, for instance.
(CNN) Here's a look at the coronavirus outbreak, declared a pandemic by the World Health Organization. The coronavirus, called Covid-19 by WHO, originated in China and is the cousin of the SARS virus.
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