Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. China Says Virus Ability to Spread Getting Stronger Reuters The coronavirus transmission ability is getting stronger and infections could continue to rise, China's National Health Commission said on Sunday, with more than 2,000 people globally infected and 56 in China killed by the disease. National Health Commission Minister Ma Xiaowei, speaking at a press briefing, said authorities' knowledge of the new virus was limited and they are unclear on the risks posed by mutations of the virus. Ma said the incubation period for the coronavirus can range from one to 14 days, and that the virus is infectious during incubation, which was not the case with Severe Acute Respiratory Syndrome (SARS), a coronavirus that originated in China and killed nearly 800 people globally in 2002 and 2003. Containment efforts, which have thus far included transportation and travel curbs and the cancellation of big events, will be intensified, Ma told a crowded news briefing on the second day of the Lunar New Year holiday. References Visible links Hidden links: 1. file://localhost/science-health/coronavirus-outbreak/california-patient-3rd-us-case-new-virus-china .