The pneumonia outbreak was first reported in the city of Wuhan, central China's Hubei Province, in December 2019. Experts have attributed the outbreak to a novel coronavirus that has since spread across China and abroad.

Here is what we know so far:

The latest in China: 78,196 confirmed cases; 2,718 dead (including 2 in Hong Kong and 1 in Taiwan); 29,775 recovered

Outside of China: Over 3,078 confirmed cases, 51 deaths reported

Countries on alert:

Italy reported over 374 confirmed cases and 12 dead, topping Europe.

Iran has reported 19 deaths, and its deputy health minister was among 139 people who tested positive for the virus.

South Korea reported more than 1,260 cases and 12 deaths.