They are not too anxious, for now, about casual contact, because federal officials think the coronavirus is spread only through "close contact, being within six feet of somebody for what they're calling a prolonged period of time", said Watt, who was the state's deputy epidemiologist for 10 years before he took the interim post two months ago. While he said it hasn't had a testing "backlog", he added that the agency's test has three steps - and that the last step has posed some problems.
CDC spokesman Richard Quartarone said a preliminary review of agency records indicates the agency did not know about the woman until Sunday, the same day the woman was first tested.
The Centers for Disease Control and Prevention reported the case February 26.
"We have been anticipating the potential for such a case in the USA, and given our close familial, social and business relationships with China, it is not unexpected that the first case in the USA would be in California", said Dr. Sonia Angell, Director of the California Department of Public Health and State Public Health Officer, in a statement. Azar said Thursday that a newly manufactured CDC test is ready to be shipped to 93 public health labs by Monday.
Three others were repatriated from China.
The graphic comes as US health officials expect the coronavirus to spread globally, and reach pandemic status in the coming months. Health officials have said that hair on the face can keep the exhalation valve on face masks and special respirators from working properly, according to KDVR-TV.
"That's more than casual contact at a grocery store", Watt said.
At least 2,762 people have died from confirmed cases of the virus, all but 44 in China, according to the latest data from the WHO. There were no confirmed cases among residents, but the decision allowed officials to free up funds and streamline coordination among departments. South Korea has the most cases of coronavirus following China.
The new patient, who lives in Solano County and has not been identified, was transferred to UC Davis Medical in Sacramento County from another hospital earlier this month.
The hospital, which has treated other coronavirus patients, has been taking infection prevention precautions since the patient arrived.
It may be possible for the virus to spread by touching a surface that has the virus on it and then touching one's mouth, nose, or possibly eyes; however, the CDC says this isn't thought to be the main way to catch it.
The new virus is a member of the coronavirus family that can cause colds or more serious illnesses such as SARS and MERS.
The virus can cause fever, coughing, wheezing and pneumonia.
Information from The Associated Press was used in this report.