The China National Health Commission today called on Wuhan residents restricted to the city and reduce public meetings to prevent corona virus outbreaks.
The government agency also said the investigation to find out the cause of the virus went well but the virus may already be mutated.
He said China would also seek international cooperation to address the epidemic similar to the Severe Acute Respiratory Syndrome (SARS).
To date, nine have died from the virus, while another 400 have been infected.
The United States also announced the virus had entered the country.
The corona virus-infected man is a US resident in his 30s and lives near Seattle.
The Wuhan-born man returned to the US on January 15, about two days before health officials began screening for passengers arriving from the Chinese city.
According to Washington State Department of Health Chris Spritzers, the man is currently being treated at the hospital for short-term monitoring.
Meanwhile, the Director of the US Centers for Disease Control and Prevention (CDC), Nancy Messonier, expects the risk for the US to be at low risk.
“The new virus is spreading, and we are expecting more patients in the US and around the world,” he said.
In another development, the World Health Organization (WHO) will hold an emergency meeting today to determine the need to declare a global emergency, as the outbreak has spread to various countries, including Thailand, Japan, South Korea and Taiwan.