Wuhan: The London-sized city where the virus began

Wuhan may not be a well-known Chinese mega-city like Beijing or Shanghai.

But the place where the coronavirus outbreak emerged is, in fact, a crowded metropolis with connections to every part of the globe.

According to UN data from 2018, 8.9 million people live in the central Chinese city - making it slightly smaller than London, but much bigger than Washington DC.

BBC 22 January 2020