Santa Clara County public health officials revealed that an older adult woman had caught the virus with no recent travel history or had been in contact with a traveler or infected person, becoming the second person to catch the virus from an unknown origin in the United States.
The Santa Clara County Public Health Department said the person is isolated at home.
The women was initially hospitalized for a respiratory illness related to chronic health conditions before being tested after a recommendation from her infectious disease physician.
A day earlier, state health officials had pegged the number of people in California with the virus at 33 after investigators announced that a hospitalized woman is believed to be the first in the U.S. to be infected without traveling internationally or being in close contact with anyone who had it.
On Thursday, a Solano County woman was the first person in the U.S. to come down with the Coronavirus without being in contact with an infected person or traveling to areas with the virus.
In Santa Clara, two others had previously been diagnosed. Kendall said a man who tested positive for the virus after returning from China and stayed at home was declared fully recovered on Feb. 20. A woman who had also traveled to China tested positive for the virus on Feb. 2. and remains under quarantine at home.
This is a developing story and this page will be updated.