The patient in Northern California is now the 60th confirmed case of the new coronavirus in the United States.
The woman has not been in contact with any of the evacuees isolated at Travis Air Force Base and health officials are tracing everyone she might've had contact with.
Newsom said the U.S. Centers for Disease Control and Prevention (CDC) has assured the state that testing protocols will be advanced and access to test kits will expand "exponentially" in the coming days.
The development marks an escalation of the worldwide outbreak in the US because it means the virus could now spread beyond the reach of preventative measures like quarantines, though state health officials said that had been inevitable and the risk of widespread transmission remained low. They hustled to a warehouse store Thursday for 10 cases of bottled water, canned food, staples like rice and beans, and cases of toilet paper and paper towels. "We're going to spend whatever is appropriate". "We want to make sure that they don't get back to their home until there is no longer a communicability risk".
The governor's office revealed the patient is a resident of Solona County, located between Napa and Sacramento. Those people are quarantined in their homes.
Newsom said the CDC has pledged to send more personnel to California to track the potential spread of the virus.
American citizens remained on high alert after the Centers for Disease Control (CDC) confirmed the first case of "community spread" coronavirus in the United States.
The virus can cause fever, coughing, wheezing and pneumonia. Stay clear of any one who is sick, wash your hands frequently, and avoid touching your face/food until you have washed your hands.
Districts already have plans to deal with natural disasters, flu outbreaks and other emergencies, and many have planned for widespread infections before, most notably during the 2009 H1N1 influenza pandemic.
The case raised questions about how quickly public health officials are moving to diagnose and treat new cases.
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The move was welcomed by public health officials, who have been frustrated by the testing snag.
The patient is now being treated at UC Davis Medical Center after being transferred from another hospital on February 19, according to the Davis Enterprise newspaper, citing a letter from hospital officials.
President Donald Trump has worked to minimize fears about the virus, but on Wednesday he also recommended that schools to start planning for arrival of the COVID-19 virus "just in case".
The patient resided in Solano County and was admitted to UC Davis Medical Centre. Dr. Blumberg, an infectious disease specialist said, "That suggests that the virus is out there in the community, and that means pretty much that everybody's at risk". The students, who are both medical professionals, may have been exposed to the patient before she tested positive for COVID-19.
With the patient as ground zero, they are interviewing immediate family members.
The patient was identified by doctors at the University of California, Davis Medical Center as a possible coronavirus case last week, but the CDC did not test the patient for several days because he did not meet the testing criteria, which is now limited to people who have recently traveled to China or a close contact of someone with coronavirus.
The first US coronavirus patient who did not recently travel overseas was unable to be tested for several days because of federal regulations, The New York Times reported.
The number of confirmed USA cases is still relatively small at 60, a lot of them repatriated American passengers from the Diamond Princess cruise ship docked in Japan.
The number of deaths in mainland China - excluding the semi-autonomous territories of Hong Kong and Macao - stands at 2,747, out of 78,497 cases. If it was contracted in the United States, it would be the country's first case of it spreading here, as opposed to being exposed overseas. And Washington still does not have adequate funding in place to support health departments' efforts, though more money is on the way. The AP is exclusively responsible for all content.