What do we know about the coronavirus?

One year on: What have we learned since news of COVID-19 first broke?
Fabian Schmidt
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Li Wenliang, who gave an early warning on the coronavirus outbreak, later died of COVID-19
Ophthalmologist Li Wenliang, who worked at the Wuhan Central Hospital, was the first to share information about suspected SARS-type lung infections in the city in Central China on December 30, 2019.
He distributed the news on the social media platform WeChat to colleagues at different hospitals in the city. Police then admonished him for "making false comments on the internet" but an official inquiry later exonerated him.
Does air conditioning help spread the coronavirus?

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