The coronavirus outbreak is now a
pandemic, the World Health Organization declared on March 11, as global confirmed cases of Covid-19 now surpass 400,000 worldwide. The outbreak has spread from the Chinese city of Wuhan in late January to 149 countries and territories—affecting every continent except Antarctica—in the course of a month. Cases in Europe now exceed the number in China. Efforts to prevent the
pneumonia-like illness from spreading further has led to
shuttered cities, widespread
flight cancellations and shaken financial markets.