Mention London, Rome, or New York, and people immediately conjure up Big Ben, the Colosseum, the Statue of Liberty. Beijing, Cairo, Mumbai? Check. They’ve heard of them. Megacities, the ones with lots of history, lots of people, and an oversized impact on the economy and culture, tend to be well-known. 

Fewer people may know much about Addis Ababa, Dhaka, Lagos, or São Paulo — yet many would recognize the names. But who knows or has been to Darkhan, Mongolia or Santa Fe, Argentina or Boké-Kamsar in Guinea?

The COVID-19 pandemic could lead to the death of mass transit. Few victims of COVID-19 were infected aboard mass transit, according to recent research. Yet ridership on urban mass transport has fallen sharply during the pandemic. In some places, such as Wuhan, China, the government shut mass transport down. In other places, the public stayed away. For example, New York City’s Metro-North commuter line reported a 95 percent COVID-19-related decrease in riders. Bus systems, which often disproportionally serve poorer riders who cannot work from home, have seen marked but less extreme drops in ridership.  

Late last year, what is thought to be a bat-associated coronavirus infected humans in Wuhan, a city of 11 million in China, possibly after a stopover in illegally traded pangolins—setting off a global pandemic. This kind of thing has happened before—with AIDS, SARS, and MERS, for example. Much remains unknown about the biology of COVID-19, which is alarmingly communicable by people with few or no symptoms. But an epidemic is only part biology. It is also driven by cultural factors, and urbanization is a crucial aspect. As sites of large gatherings and dense living conditions, cities offer the perfect settings for the spread of infection, yet their role seems to have often gone unremarked in discussions of the pandemic.