Case Log
Updated October 13, 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.
October 14: A staff member at an off-site facility who last accessed that facility on October 11.
October 13: A staff member who last accessed campus on September 28.
October 12: A graduate student.
October 4: Two graduate students.
September 17: Two staff members.
September 16: A staff member who last accessed campus on September 14.
September 13: Two staff members.
September 10: A graduate student and two staff members.
September 8: A staff member who last accessed campus on August 24.
September 7: A graduate student and a staff member.
September 3: A graduate student and a staff member.
September 2: A graduate student who lives in Caltech housing.
September 1: A graduate student and a staff member.
August 31: An undergraduate student and two staff members.
August 26: An undergraduate student who last accessed campus on August 26.
August 25: An undergraduate student and a staff member who both last accessed campus on August 24.
August 24: An undergraduate student and a graduate student.
August 23: A staff member at an off-campus facility.
August 20: A staff member who was last on campus in March 2020.
August 19: A staff member at an off-campus facility.
August 18: A staff member who last accessed campus on August 18.
August 17: A staff member and an undergraduate student.
August 16: A staff member who last accessed campus on August 5.
August 13: A graduate student who last accessed campus on August 5.
August 11: A staff member who last accessed campus on August 5.
August 10: A graduate student who last accessed campus on August 9.
August 4: Two staff members and a staff member at an off-campus facility.
August 3: Two staff members who last accessed campus on July 29 and in March 2020, respectively.
August 2: Two staff members and a staff member at an off-campus facility.
July 30: A staff member at an off-campus Caltech facility.
July 28: A staff member who last accessed campus on June 29.
July 26: A staff member and a graduate student living in non-Caltech housing.
July 20: A staff member who last accessed campus on July 14.
July 19: A graduate student who lives in Caltech Housing.
July 15: A staff member at an off-campus Caltech facility.
July 13: A postdoctoral researcher who last accessed campus July 9.
April 28: Two employees who last accessed campus on April 27.
April 20: An employee who last accessed campus on April 19.
April 14: A student living in non-Caltech housing.
April 12: A staff member who last accessed campus on April 9.
April 9: A staff member at an off-site Caltech facility.
April 2: A staff member who last accessed campus on April 1.
March 29: A staff member who last accessed campus on March 26.
March 23: A staff member who last accessed campus in March 2020.
March 16: One staff member who last accessed campus on March 15.
March 11: A staff member who last accessed campus on March 10.
March 8: One graduate student living in Caltech housing and one staff member.
February 26: One staff member who last accessed campus February 25.
February 16: One graduate student who last accessed campus February 11.
February 12: One staff member who last accessed campus February 5.
February 11: One staff member who last accessed campus February 3.
February 10: One staff member who last accessed campus February 8.
February 8: One staff member who last accessed campus February 5.
January 27: One staff member who last accessed campus January 26.
January 26: One staff member who last accessed campus January 19.
January 21: Three staff members and a graduate student living in Caltech housing.
January 20: A staff member and a graduate student living in Caltech housing.
January 19: Three staff members and a graduate student living in Caltech housing.
January 14: Two staff members and a graduate student living in off-campus, non-Caltech housing.
January 13: One staff member who last accessed campus on January 11.
January 12: One staff member and three graduate students living in off-campus, non-Caltech housing.
January 11: Eight staff members and one graduate student living in off-campus, non-Caltech housing.
January 8: Six staff members and one graduate student living in off-campus, non-Caltech housing.
January 7: Eight staff members and two graduate students living in off-campus, non-Caltech housing.
January 6: Three staff members who reported positive test results through community testing.
January 5: Six staff members and one graduate student.
January 4: Four staff members, one graduate student, and one postdoctoral researcher.
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 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 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.
November 30: Two employees last on campus in October, and a graduate student who has not been to campus.
November 24: A graduate student living in off-campus housing who was last on campus on November 24.
November 23: An employee who was last on campus on November 16.
November 20: An employee who was last on campus on November 17.
November 18: One employee who was last on campus on November 17, and a second who was last on campus on November 18.
November 12: An employee who was last on campus on November 10.
November 9: An employee at the Children's Center at Caltech (CCC) who was last on campus on October 23. Also, an employee who was last on campus on November 7.
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
*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.