As of 6 pm Monday, a total of 224 cases of pneumonia caused by the novel coronavirus had been reported in China. Of them, 217 had been confirmed and 7 remained suspected.
Overseas, one case has been confirmed in Japan, two in Thailand, and one in the Republic of Korea.
冠状病毒（coronavirus）是一类主要引起呼吸道、肠道疾病（respiratory and intestinal diseases）的病原体。这类病毒颗粒的表面有许多规则排列的突起（a fringe of bulbous surface projections ），整个病毒颗粒就像一顶帝王的皇冠（royal crown），因此得名“冠状病毒”。冠状病毒除人类以外，还可感染猪、牛、猫、犬、貂、骆驼、蝙蝠、老鼠、刺猬等多种哺乳动物以及多种鸟类（mammals and birds）。
2019-nCoV, as it's been labelled, is understood to be a new strain of coronavirus that has not previously been identified in humans.
Coronaviruses are a broad family of viruses, but only six (the new one would make it seven) are known to infect people.
Scientists believe an animal source is "the most likely primary source" but that some human-to-human transmission has occurred.
Signs of infection include respiratory symptoms, fever, cough, shortness of breath and breathing difficulties.
The prevention and control work is crucial at the moment due to the large passenger flows during the Spring Festival holiday, Xi said.
The Party committees and governments at all levels must put people's safety and health as the top priority and take effective measures to curb the spread of the virus, he said.
Xi ordered all-out efforts to treat patients, identify the causes of the virus infection and spread at an earlier date, strengthen monitoring and standardize treatment procedures.
Xi spoke of the need for the timely release of information and the deepening of international cooperation.
He also stressed the necessity of informing the public of relevant policies to safeguard social stability and ensure people have a peaceful and auspicious Chinese New Year festival.
Li instructed related government departments and localities to improve response plans and spare no effort in prevention and control in this regard.
He also demanded better communication and coordination with the World Health Organization, related countries, as well as Hong Kong, Macao and Taiwan to join efforts to curb the spread of the virus.