The Long Beach health department has now found a total of 17 cases of COVID-19 among Cal State Long Beach students and another nine cases from non-students who attended off-campus social gatherings, officials said.

CSULB announced on Sunday that five students tested positive for the disease after attending gatherings off campus. The school put all students who live on campus, about 328, into quarantine and paused the limited number of on-campus classes for two weeks. Of the 17 student cases, 10 live on campus and seven live off campus, university officials said, and those on campus have been moved into a separate building.

Officials noted that some dorm students decided to quarantine off campus at home and a total of 206 students are staying on campus now.

The department began investigating the outbreak last week when officials learned of a small cluster of cases last week among people who became infected at a party off campus, city spokeswoman Chelsey Finegan said. Health officials then learned more attendees of the party were infected with the virus, some who tied to CSULB. It’s unclear how many parties or gatherings the outbreak is linked to, but Finegan said the gatherings were a wide range of sizes.

“All are connected through various social groups, living both on and off campus,” Finegan said.

Since the quarantine was announced Sunday, the department brought its mobile testing unit to the campus and tested about 150 students on Monday and will continue to test the rest this week. Students also had the option of going to their own healthcare provider for a test.

University spokesman Jeff Cook noted that the students who have tested positive for the illness are either asymptomatic or are reporting mild symptoms.

The health department is working with CSULB officials to trace contacts the infected students may have had.

“Given the increase in cases within a short period of time, and a high number of cases reporting exposing others at additional social gatherings, there is the potential for a large number of secondary cases,” the department said.

The university is working to enforce the quarantine by having staff on campus monitor students and the card-swiping system that gives students access to their dorms, Cook said. If students don’t comply, they could be disciplined in a number of ways that can include suspension or removal from housing.

“An intermediate sanction, by example, would be a required paper discussing the illness, its dangers and the importance of public-health guidance,” Cook said.

The university severely limited the number of students in housing this year for COVID-19 precautions, with priority given to students experiencing homelessness, special needs students and student-athletes. These students were placed in their own rooms and had to sign an agreement that they would abide by social distancing and transmission mitigation rules.

“While the university is profoundly disappointed in the conduct of the students who violated public health guidance and will pursue disciplinary action as appropriate, our priority continues to be their health and safety and that of all members of our community,” Cook said.

Editor’s note: This story has been updated to reflect the updated number of infected students later provided by CSULB officials.