As the Chinese city of Wuhan, the epicenter of the new coronavirus, becomes the latest urban center to face a deadly disease outbreak, city planners and physicians say such densely packed hubs are particularly vulnerable and may need a redesign.

Wuhan, a city of about 11 million, has been under virtual lockdown for over three weeks. More than 1,400 people on the mainland have died, according to authorities.

The outbreak has brought to mind another deadly epidemic, SARS, or Severe Acute Respiratory Syndrome, which killed more than 770 people between 2002 and 2003.