China says it has more than 17,000 confirmed cases of the Wuhan coronavirus, representing a huge leap from the 4,400 cases reported as of last week. Chinese health officials said Monday morning that 2,829 new cases had been diagnosed in the past 24 hours alone.

Outside of mainland China, nine countries or regions are reporting double-digit cases of the coronavirus, led by Japan with 20, according to a global dashboard created by the Johns Hopkins Whiting School of Engineering.

The respiratory virus has killed more than 360 people. The first coronavirus fatality outside China was reported in the Philippines over the weekend.

In a sign of the economic toll, China’s stock markets were pummeled Monday — the first day of trading since the Lunar New Year holiday — with the Shanghai Composite Index falling by nearly 8%. Trading was halted for hundreds of Chinese companies after prices for their stocks dropped by 10% — triggering a mandatory hold.

Coronavirus Cases Have More Than Tripled In Past Week; 17,000 Sickened In China

Map: Daniel Wood/NPR
Research by Susie Cummings and Ayda Pourasad/NPR
Source: The Centre for Health Protection of the Department of Health of Hong Kong, Centers for Disease Control and Prevention