Bay Area coronavirus updates: Lakeshore Elementary in SF to close for 2 weeks

San Francisco Mayor London Breed said Wednesday the city is issuing an order prohibiting all large group events of 1,000 people or more. The ban will apply to all events at Chase Center, including Golden State Warriors games, the mayor is reportedly set to announce. less San Francisco Mayor London Breed said Wednesday the city is issuing an order prohibiting all large group events of 1,000 people or more. The ban will apply to all events at Chase Center, including Golden State ... more Photo: Justin Sullivan / Getty Images Photo: Justin Sullivan / Getty Images Image 1 of / 108 Caption Close Bay Area coronavirus updates: Lakeshore Elementary in SF to close for 2 weeks 1 / 108 Back to Gallery

This story is no longer being updated. Read the latest on COVID-19 in the Bay Area here, as of March 12.

For more coverage, visit our complete coronavirus section here.

LATEST, March 11, 11:15 p.m. Lakeshore Elementary School in San Francisco will close for at least two weeks after four students and a number of adult family members reported having respiratory illness, the school district announced Wednesday night.

The SF Department of Public Health is testing the students for coronavirus. There are currently no confirmed cases at Lakeshore, the district said, but the school will be closed for at least 14 days.

March 11, 8 p.m. Marin County is reporting two new cases of coronavirus.

This brings the county's total to three. Officials said the two new cases lived with the first person to test positive in the county, an individual who was a passenger on the Grand Princess cruise ship in February.

March 11, 7 p.m. The NBA announced it is suspending the 2019-2020 season after Utah Jazz center Rudy Gobert reportedly tested positive for coronavirus.

Earlier in the day, the city of San Francisco banned gatherings of over 1,000 people, which would have stopped the Golden State Warriors from playing home games at Chase Center with fans present.

The Associated Press reported the season will be suspended for at least two weeks.

March 11, 5:10 p.m. Three new cases of coronavirus have been confirmed in Santa Clara County, bringing the county's total to 48.

County officials did not provide any additional information on the individuals, and stated the number of cases is expected to increase.

March 11, 4:15 p.m.: The Oakland Marathon on March 22 has been canceled due to the Alameda County Health Department issuing new guidance related to large community events to reduce community transmission of COVID-19.

"We know many of you have trained and made sacrifices for months in anticipation of a great personal accomplishment," marathon organizers said in a statement. "We regret we are unable to host our amazing event, and hope you understand this decision was beyond the control of Corrigan Sports Enterprises."

Staff is meeting Thursday to review next steps and options.

The Alameda County Health Department released guidance for mass gatherings on Wednesday, recommending that event organizers postpone non-essential mass gatherings and community events.

March 11, 12:55 p.m.: An additional 42 TSA agents at San Jose Mineta International Airport are on paid leave after three of their coworkers at the airport tested positive for the novel coronavirus.

Those three employees are receiving medical care, KTVU reported, and the other 42 employees are being quarantined at home as a precaution while monitoring for symptoms.

All 45 employees were on the evening shift at the Terminal B checkpoint, according to KTVU. A union representative told the TV station he wasn't sure how long the employees had been working while infected. Alaska Airlines, British Airways, Hainan Airlines and Southwest all fly out of Terminal B.

March 11, 11:30 a.m.: The San Mateo County Public Health Department reported Thursday the county now has 15 known cases of coronavirus. This is up from 9 cases on Wednesday.

As the number of COVID-19 cases continues to rise around the Bay Area, San Mateo County's top public health official isn't mincing words.

"I now have evidence of widespread community transmission of COVID-19 in San Mateo County," wrote Health Officer Scott Morrow. "The only way to stop the spread of COVID-19 in the light of having community transmission is to have everything in our society grind to a halt for an extended period of time, as you have seen done in other countries."

However, Morrow doesn't believe it's time to make that call in San Mateo County, where there are nine known cases of the novel coronavirus as of Wednesday morning. He is asking for the cancellation of all non-essential gatherings and for residents to increase personal hygiene and social distancing.

"At this moment, given what I know, I believe grinding everything to a halt would cause us more harm than good," Morrow said.

It's not clear exactly how the six new additional patients contracted the virus.

March 11, 10:45 a.m.: San Francisco Mayor London Breed said Wednesday the city is issuing an order prohibiting all large group events of 1,000 people or more. The ban will apply to all events at Chase Center, including Golden State Warriors games, the mayor is reportedly set to announce.

"This is necessary to slow the spread of COVID-19, and builds on our previous public health recommendations," Breed wrote on Twitter.

Read the full story here.

March 11, 8:42 a.m. Amazon announced Wednesday morning its Amazon Web Services Summit in San Francisco is canceled. The conference was planned for April 14 at the Moscone Center and will be replaced with a digital conference sometime in May.

Several new coronavirus cases were reported around the Bay Area on Tuesday. Three Transportation Security Officers at Mineta San Jose International Airport tested positive for COVID-19, TSA officials said. It's unclear if these cases are among the 45 already reported by public health officers in Santa Clara County.

Contra Costa County announced one presumptive case of COVID-19, bringing the county total to 10 residents. A new case was also detected in Alameda County, the county's third. Another two cases of COVID-19 were confirmed in Santa Clara County, bringing the county's total to 45. San Francisco public health officials also announced a case; the city total is now 14.

California had 157 cases of coronavirus as of Tuesday; this number doesn't include passengers from the Grand Princess cruise ship currently docked in Oakland. The Bay Area has about 100 cases.

ALAMEDA COUNTY

Confirmed cases: 3 residents

Fore more information on Alameda County cases, visit the public health department website.

CONTRA COSTA COUNTY

Confirmed cases: 10 residents, 3 people of unknown residence being treated at Contra Costa hospitals

Fore more information on Contra Costa County cases, visit the public health department website.

MARIN COUNTY

Confirmed cases: 3 residents, 1 patient of unknown residence

Fore more information on Marin County cases, visit the public health department website.

NAPA COUNTY

Confirmed cases: 2 patients treated in Napa, then transferred out of county

For more information on Napa County cases, visit the public health department website.

SAN MATEO COUNTY

Confirmed cases: 15 cases, at least 8 patients of unknown residence treated at San Mateo County hospital

For more information on San Mateo County cases, visit the public health department website.

SANTA CLARA COUNTY

Confirmed cases: 48 residents

Related deaths: 1

This county has the most confirmed cases in the Bay Area. As of March 8, health officials have identified a total of 43: eight were travel-related, 14 were from being in close contact with a known case, and 21 contracted the virus through unspecified community transmission.

One woman died on March 9 at El Camino Hospital in Mountain View. She had been hospitalized for several weeks, officials said.

Fore more information on Santa Clara County cases, visit the public health department website.

SAN FRANCISCO COUNTY

Confirmed cases: 14 cases, 3 out-of-county patients being treated in SF hospitals

For more information on San Francisco County cases, visit the public health department website.

SOLANO COUNTY

Confirmed cases: 6 cases, at least one of them is a non-resident

A female Solano County 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 North Bay VacaValley Hospital in Vacaville on Feb. 15 and was transferred to UC Davis Medical Center three days later, before being tested.

Two health care workers at the North Bay VacaValley Hospital were also infected with the virus. One is a Solano County resident; the other lives in Alameda County.

For more information on Solano County cases, visit the public health department website.

SONOMA COUNTY

Confirmed cases: 2 residents, 1 patient of unknown residency

For more information on Sonoma County cases, visit the public health department website.

CALIFORNIA DEATHS: 4

Four deaths deaths related to coronavirus in California have been reported.

The first occurred in Placer County on March 4. The Placer County Health Department said the deceased is an elderly resident of the county with underlying health conditions. The patient tested presumptively positive on Tuesday, March 3 at a California lab and was likely exposed on a Princess cruise ship that traveled from San Francisco to Mexico, Feb. 11 to 21, health officials said. The patient was under treatment in isolation at Kaiser Permanente Roseville.

The second California death, the first in the Bay Area, was reported in Santa Clara County in March 9. A woman in her 60s passed away at El Camino Hospital in Mountain View Monday, the first death tied to the novel coronavirus in the Bay Area. The woman was hospitalized for several weeks, Santa Clara County health officials said.

Sacramento County announced on March 10 that a woman in her 90s in an assisted-living facility died from corornavirus. This was the first death in the county and the third in California. Health officials said the patient had an underlying health condition and "died of complications" related to the pneumonia-like virus.

Los Angeles County announced the fourth death on March 11: a woman who had traveled extensively (including a layover in South Korea) and who was visiting Los Angeles from out of town.

The death of a 72-year-old man from Sunnyvale was previously thought to be linked to COVID-19, but test results confirmed the man did not have the virus.

Amy Graff and Alix Martichoux are digital editors with SFGATE. Email them: agraff@sfgate.com, alix.martichoux@sfgate.com.

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