Live updates: Three people in Santa Clara County test positive for COVID-19

Officials with the County of Santa Clara Public Health Department said 11 people in the county have tested positive for COVID-19. Officials with the County of Santa Clara Public Health Department said 11 people in the county have tested positive for COVID-19. Photo: Google Maps Photo: Google Maps Image 1 of / 22 Caption Close Live updates: Three people in Santa Clara County test positive for COVID-19 1 / 22 Back to Gallery

Track the ongoing confirmed cases below. For more coverage, visit our complete coronavirus section here."

UPDATE: March 4, 4:15 p.m.: Three more individuals in Santa Clara County, all men, tested positive for coronavirus, local health officials revealed Thursday. The results bring the total of those with COVID-19 in the county to 14. One is hospitalized; the other two, who were reportedly "close" in proximity to another affected person, are being monitored in their home.

UPDATE: March 3, 7:24 p.m.: A resident of Contra Costa County tested positive for the coronavirus, officials announced Tuesday night. This is the first person in the county to test positive for COVID-19.

According to NBC Bay Area, the resident did not have any known recent travel history.

UPDATE: March 3, 7 p.m.: Sonoma County health officials said at a Tuesday night press conference that a coronavirus patient being treated in the county took a Princess cruise from the Port of San Francisco to Mexico in February.

The newest case in the county was announced Monday but officials didn't provide details on the cruise.

The patient first noticed symptoms after returning from the cruise on Feb. 11, and is being treated at an undisclosed medical center in the county.

An investigation is underway to identify people who came into contact with the person.

The individual took a shuttle from the San Francisco port to the Charles M. Schulz Sonoma County Airport in Santa Rosa. Anyone who may have been on that shuttle is asked to contact the health department at 707-565-4566.

UPDATE: March 3, 3 p.m.: The city of Berkeley announced its first known case of coronavirus Tuesday.

A resident tested positive for COVID-19 after returning to Berkeley on Feb. 23. City officials say they believe that the resident came into contact with the virus while traveling, though they did not disclose the location of that trip.

The resident is said to have "largely stayed at home in a voluntary self-imposed quarantine," but local health officials are investigating if he or she came into contact with others who now may be at risk.

The Berkeley resident brings the total number of known cases in California to 44.

UPDATE: March 3, 2:30 p.m.: Santa Clara County announced two new coronavirus cases Tuesday afternoon, bringing the county total to 11.

The cause of infection in these two patients is under investigation.

Of the nine other confirmed cases in the county, four are travel related, three had close contact with a known case and two have been determined to be community transmission.

SFGATE is tracking new cases in the region and will update this story when new information is issued.

UPDATE: March 2: The number of coronavirus patients in the San Francisco Bay Area climbed Monday to about two dozen cases.

Sonoma County announced its second case and declared a public health emergency. The newest patient is isolating at home and recently returned from a cruise ship that traveled from San Francisco to Mexico, according to county health officials. San Mateo County also reported a case in a resident who is presumed to have the virus; test results are pending.

Public health officials reported two new cases of COVID-19 in Santa Clara County, bringing the county total to nine. Both had known contact with infected patients.

Outside the Bay Area, a healthcare worker in Placer Couny was confirmed to have the virus. The worker had been in contact with another confirmed case in Solano County who was an employee of NorthBay VacaValley Hospital,

ALSO: Healdsburg School in North Bay closes amid coronavirus concern

The majority of coronavirus cases in California are from people who recently traveled to Wuhan recently or who were evacuated from the Diamond Princess cruise ship in Japan to the Travis Air Force Base in Fairfield, before being transferred to medical facilities around the state.

Health officials have recorded about 100 cases of COVID-19 in the United States, including people evacuated from Wuhan and the Diamond Princess cruise ship in Japan. Six deaths have been reported in the U.S., all in Washington state, where many cases are linked to a nursing facility.

Below is a rundown of the cases around the greater Bay Area. We will continue to to update this story as new cases pop up.

Alameda County

A county resident, who is a health care worker, was exposed to an infected patient at NorthBay VacaValley Hospital in Vacaville was announced as presumptive case on March 1.

On March 3, the City of Berkeley announced a resident tested positive for the virus after returning to the city from traveling. (Officials didn't say where the resident had traveled from.)

Contra Costa County

Three patients transferred from Travis Air Force Base to Contra Costa County hospitals have tested positive, according to health officials.

Marin County

A patient with laboratory-confirmed novel coronavirus was transferred from Travis Air Force Base in Solano County to a Marin County hospital on Feb. 27, according to health officials. The patient is isolating at home.

Napa County

Napa’s Queen of the Valley Medical Center treated two patients with suspected coronavirus. The two patients arrived in Napa on Feb. 17 after being transferred from Travis Air Force Base. They had originally been under quarantine for two weeks aboard the Diamond Princess cruise ship in Japan before being evacuated with other American residents to West Coast locations. The hospital reported the patients were transferred to another location on Feb. 24.

San Mateo County

County health officials reported a case in a resident who is presumed to have the virus on March 2; test results are pending. A repatriated patient was transferred to a county hospital on Feb. 27.

Santa Clara County

This county has the most confirmed cases. Since March 2, health officials have identified a total of 11.

Among the recent cases are an adult male who had household contact with an infected patient in Santa Clara County. He's in isolation at home. The eighth person to test positive was an adult male who had household contact with an infected person in another county. He's also isolating at home.

The county's sixth and seventh cases were a husband and wife who recently traveled to Egypt. The fifth was a woman who officials said has chronic health conditions. All three people are hospitalized.

A fourth case was confirmed Feb. 29 in a resident who had household contact with the third case who was identified Feb. 28 as a 65-year-old woman with no travel history to a country with an outbreak and no known contact with an infected patient. She was the second case of "unknown origin" in the U.S. This patient had chronic health conditions and was hospitalized for a respiratory illness.

The county's second case was confirmed on Feb. 1 — a woman who visited Wuhan stayed at home except to go to a medical clinic on two separate occasions.

The first Bay Area case was identified in Santa Clara County on Jan. 31; a man returned from Wuhan and Shanghai on Jan. 24, and left his home only for medical care.

San Francisco County

No cases of coronavirus have been identified in San Francisco residents. San Francisco has treated three out-of-county patients in SF hospitals, according to local officials. One traveled in China, one was the spouse of that person, and one was from the cruise ship and had tested positive, with no symptoms.

Solano County

The county has at least five cases. American evacuees from Wuhan and the Diamond Princess arrived at Travis AFB in the county on Feb. 5. Some people who tested positive days after arrival were transferred to hospitals in and outside the county.

A health care worker who was exposed to an infected patient at NorthBay VacaValley Hospital in Vacaville was announced as presumptive case on March 1. That patient is isolating at home.

A female resident was the first case of "unknown origin" in the U.S. and was infected with virus without any travel history or contact with another known case. She first arrived at the NorthBay VacaValley Hospital in Vacaville on Feb. 15 and was transferred to UC Davis Medical Center three days later, before being tested.

Sonoma County

A patient evacuated from the Diamond Princess Cruise ship off the coast of Japan to Travis Air Force Base in Fairfield tested has been in isolation at a Sonoma County hospital. The person tested positive but wasn't showing symptoms.

Sonoma County announced its second case on March 2 and declared a public health emergency. The newest patient is isolating at home and recently returned from a cruise ship that traveled from San Francisco to Mexico, according to county health officials.

San Benito County

The husband and wife, both 57, both tested positive and were initially placed in isolation in their home before being transferred to a hospital in San Francisco for treatment. They were later discharged. The man, who traveled to Wuhan, tested positive for the virus and subsequently transmitted it to his wife, according to officials. This was the first California case involving person-to-person transmission.

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