Update: This story was originally published Tuesday, March 10, 2020. As of Wednesday, March 11, 2020, the first case of coronavirus has been confirmed in Pasadena.

The Pasadena Public Health Department has tested a Caltech graduate student for the new coronavirus, known as COVID-19, according to a news release on Tuesday.

If the test comes back positive, the student could have the first confirmed case of the virus in Pasadena. The student, who was described as having “mild symptoms,” is currently isolated in off-campus housing, according to the release.

The Caltech student is one of at least 50 people who are quarantined in the Pasadena area, according to figures provided to the City Council on Monday night by Health Director Ying-Ying Goh.

While Caltech will remain open, all public events on campus have been canceled, postponed or made virtual through April 6, it says. No new events can be scheduled before May 1. The college is planning to take many of its classes online, if necessary.

Additionally, Caltech custodial staff has started using enhanced cleaning measures, including EPA-recommended antimicrobial products, on objects such as elevator buttons and door knobs.

It’s unclear how many people have been tested for the virus in Pasadena at this point.

In an email to this news group, city spokeswoman Lisa Derderian said “hundreds of people in Los Angeles County have been tested, and some people in Pasadena will be tested, with an increase in testing as it becomes available.”

She said the city won’t be notifying the public every time someone is tested because it will be ongoing, and “we need to be sensitive” to the privacy required by health laws.

“With the onset of testing in commercial labs, individuals can call their private physician” if they suspect they have the virus, Derderian said. The Pasadena Public Health Department can help coordinate sending the specimen to county or state public health labs “if the physician’s office does not have access to a commercial lab,” she said.

One new case was announced in Los Angeles County on Tuesday, bringing the total to 20 individuals infected, according to a news release.

“We are now in a situation where there is community transmission in Los Angeles County,” Derderian wrote in an email to this news group.

As a precautionary measure, the city has canceled Pasadena ArtNight, which was scheduled for Friday, March 13.

“While the city health officer has not directed us to cancel this event, the city is concerned that ongoing community perception of current health issues will reduce attendance as well as limit the number of volunteers available to provide staffing,” a Tuesday news release from the city reads. “A number of participating venues have also expressed concerns over health issues as well as over reduced attendance.”

Pasadena Unified also issued its own statement on Wednesday, saying it was canceling or postponing all public events “that bring large groups” together.

Last week, the Pasadena Public Health Department declared a public health emergency in a bid to free up resources as necessary.

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