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Case Log

Updated January 21, 2021

This page provides information on confirmed COVID-19 cases known to Caltech. The cases represent both individuals who were tested at Caltech and those who reported off-campus test results to the Institute. Whether each individual was on campus or at a Caltech-managed facility at the time of, or immediately preceding, testing is noted below.

In accordance with public health protocols and the Institute's guidelines for responding to a reported or suspected illness, anyone from within the Caltech community who is identified to have been at risk for exposure from one of these individuals has been or will be notified with specific directions for quarantining, self-monitoring, and testing.

Individual health information is confidential; all members of the community must respect those privacy rights.

Reported Cases (organized by the day the case was reported to Caltech)

December 30: Two staff members and a faculty member.

December 28: Three staff members and one graduate student.

December 23: Two campus staff members and two postdoctoral researchers.

December 22: Two campus staff members and one employee at an off-campus facility.

December 18: One staff member who was last on campus in March 2020.

December 17: Two staff members: one who was last on campus on December 15 and one who was last on campus on December 17.

December 16: Six staff members: four who were last on campus on December 14 and two who were last on campus on December 11.

December 14: Thirteen members of the Caltech community: nine staff members, one postdoctoral researcher, one faculty member, and two graduate students.

December 11: Three employees and one undergraduate student who lives off-campus in non-Caltech housing.

December 10: Eight employees and a household member of a Caltech community member residing in Caltech-affiliated housing.

December 9: Four employees and a graduate student who tested positive via the campus surveillance testing program.

December 8: An employee and a graduate student, each who were last on campus on December 3.

December 7: Three employees who tested positive via the SWS surveillance testing program and were each last on campus on December 4.

December 3: An employee at the Children's Center at Caltech (CCC) who was last on campus on December 1.

December 2: Four employees, two of whom tested positive via the SWS surveillance testing program.

December 1: Three employees: one last on campus on November 19, another last on campus on November 20, and a third who tested positive when reporting to SWS for surveillance testing before work.

July 31: Campus employee; last on campus on July 28.

July 30: Children's Center at Caltech employee; last reported to campus on July 27

July 28: Three campus employees: one last on campus on July 21, the second was on campus on July 27*, and the third has not been on campus since July 10; this person developed symptoms while completing a quarantine period after an off-campus exposure.

*This individual was later determined to be a false positive.

July 26: Campus employee; last on campus on July 20.

July 21: Campus employee; last on campus on July 20.

July 20: Campus employee; last on campus on July 13.

July 14: Campus employee; last on campus on July 10.

July 12: Campus employee; last on campus on July 8.

July 10: Campus employee reports a positive COVID-19 result from mid-June; last on campus in March.

July 7: Campus employee; last on campus on June 26.

July 6: Campus employee; last on campus on July 2.

June 29: Campus employee; last on campus in mid-March.

June 9: Campus employee; last on campus on May 28.

April 23: Graduate student in non-Caltech housing; last on campus in mid-March.

April 11: Family member of a graduate student in Caltech family housing; no direct contact with campus.