Health checks stepped up: The Chinese government has classified the outbreak in the same category as SARS, meaning compulsory isolation for those diagnosed with the illness and the potential to implement quarantine measures on travel.
He immediately called his health care provider and went to a clinic on January 19. Health officials still do not know much about the novel virus, but the CDC has activated its emergency response system as a result. The virus has also been confirmed in Japan, South Korea, Taiwan and Thailand. So far, 300 cases of the new virus have been identified, the majority of which are in Wuhan. Six people have died from the virus, although others have been discharged with milder symptoms.
Initial symptoms of the new coronavirus include fever, cough, tightness of the chest and shortness of breath.
The patient in Washington told doctors that he had not visited the animal markets in Wuhan, nor had he come into contact with anyone who was sick. "He was just traveling in that area", said Dr. Chris Spitters, health officer in Snohomish County Health District.
India will expand thermal screening of passengers arriving from China, including Hong Kong, to seven airports from the current three. The U.S. Centers for Disease Control and Prevention developed a test to detect the new coronavirus and plans to share it with others.
News of the first case of the virus in the United States surfaced as officials studied growing evidence that the disease can be transmitted from person to person, although it is not clear how easily.
"If we feel there is a level of risk where we need to warn the public about it, then we will do that", Modie said.
Local and federal health officials began the contact investigation Tuesday to see exactly who could have been affected or exposed to the virus by the Snohomish County man.
"That's our priority: to determine who is at risk and what it means to be at risk", Scott Lindquist, Washington state epidemiologist, said.
What's happening: Health officials confirmed earlier this week that the pneumonia-like virus can be passed from person-to-person.
The latest death toll in Hubei province, of which Wuhan is the capital, rose to 17 by midday on Wednesday, state television quoted the provincial government as saying.
World Health Organization said earlier that an animal source seemed to be "the most likely primary source", with "some limited human-to-human transmission occurring between close contacts".
Cathay said that as required by the Hong Kong health authorities, it was distributing health declaration forms and will be making face masks and antiseptic wipes available at the boarding gate to passengers travelling from Wuhan to Hong Kong.
In the US, the Centers for Disease Control and Prevention is funneling flights directly or indirectly from Wuhan, China, to five specific airports where screening will be done, adding Chicago and Atlanta to prior designated screening airports.
Russian Federation strengthened its sanitary and quarantine controls, and Singapore and Saudi Arabia started screening all passengers from China.
The CDC is testing samples for the virus in Atlanta now, but in the coming weeks, testing will be shared nationally with state health departments.
In his first public remarks on the illness, Chinese president Xi Jinping instructed government departments to promptly release information on the virus and deepen global cooperation.