Case Log
Updated June 29, 2022
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.
June 29: Three graduate students, one undergraduate student, and 12 employees.
June 28: Four graduate students, one undergraduate student, and eight employees.
June 27: Six graduate students, eight undergraduate students, and 19 employees.
June 24: Three graduate students, three undergraduate students, and 10 employees.
June 23: Seven graduate students, six undergraduate students, and eight employees.
June 22: Three graduate students, two undergraduate students, and 13 employees.
June 21: Nine graduate students, nine undergraduate students, and 16 employees.
June 17: Two graduate students, three undergraduate students, and six employees.
June 16: Six graduate students, seven undergraduate students, and nine employees.
June 15: Six graduate students, four undergraduate students, and 10 employees.
June 14: Four graduate students and nine employees.
June 13: Six graduate students, three undergraduate students, and seven employees.
June 10: Three graduate students, three undergraduate students, and seven employees.
June 9: Three graduate students, two undergraduate students, and four employees.
June 8: Four graduate students, four undergraduate students, and nine employees.
June 7: One graduate student, three undergraduate students, and four employees.
June 6: Four graduate students, five undergraduate students, and 10 employees.
June 3: Two graduate students, eight undergraduate students, and six employees.
June 2: Nine graduate students, 11 undergraduate students, and 11 employees.
June 1: Two graduate students, 14 undergraduate students, and five employees.
May 31: Four graduate students, 22 undergraduate students, and eight employees.
May 27: Four graduate students, five undergraduate students, and three employees.
May 26: Seventeen graduate students, one undergraduate student, and three employees.
May 25: Nineteen graduate students.
May 24: Eighteen graduate students, two undergraduate students, and three employees.
May 23: Three graduate students, two undergraduate students, and two employees.
May 20: Five graduate students, two undergraduate students, and six employees.
May 19: Six graduate students, three undergraduate students, and nine employees.
May 18: Five graduate students, two undergraduate students, and five employees.
May 17: One graduate student, four undergraduate students, four employees.
May 16: Two graduate students, three graduate students, and eight employees.
May 13: Three graduate students and three employees.
May 12: Three employees.
May 11: One undergraduate student, two graduate students, and two employees.
May 10: One graduate student and one employee.
May 9: One graduate student and six employees.
May 6: Two graduate students and two employees.
May 5: One graduate student.
May 4: Three graduate students and five employees.
May 3: Two employees.
April 29: Four undergraduate students, one graduate student, and two employees.
April 28: Two undergraduate students, five graduate students, and three employees.
April 27: Three undergraduate students and one graduate student.
April 26: Two undergraduate students and two employees.
April 25: Nine undergraduate students and three graduate students.
April 22: Seven undergraduate students.
April 21: 12 students and two employees.
April 20: Six students
April 19: Three employees.
April 18: Five students and two employees.
April 15: Six students.
April 14: Five students.
April 13: Six students and one employee.
April 12: Two employees.
April 11: Six students and two employees.
April 8: Two students and two employees.
April 7: Four students and two employees.
April 6: One student.
April 5: One student and one employee.
April 4: Two students and four employees.
April 1: Two students and one employee.
March 31: Five students.
March 30: Three students.
March 29: One employee.
March 28: Eight students and two employees.
March 25: One undergraduate student and one employee.
March 23: One employee.
March 21: One graduate student and one employee.
March 18: One student.
March 17: Two students.
March 16: Three students and one employee.
March 15: One employee.
March 14: Two students and one employee.
March 11: One student.
March 10: One employee.
March 9: Two students and one employee.
March 7: Two employees.
March 2: One student.
March 1: One student.
February 28: One employee.
February 25: Two graduate students, three undergraduate students, and one employee.
February 23: One employee.
February 22: One employee.
February 18: Two employees.
February 17: One employee.
February 15: Two graduate students.
February 14: A graduate student and three employees.
February 11: A graduate student and two employees.
February 10: Three graduate students, two undergraduate students, and five employees.
February 9: Two employees.
February 7: Three students, six employees
February 4: Two students.
February 3: Two employees.
February 2: One graduate student and one employee.
January 31: Nine employees.
January 28: One undergraduate student, one graduate student, and seven employees.
January 27: Five employees.
January 26: One undergraduate student, two graduate students, and seven employees.
January 25: One graduate student and three employees.
January 24: One undergraduate student, six graduate students, and 12 employees.
January 21: Two undergraduate students, two graduate students, and 14 employees.
January 20: Two undergraduate students, five graduate students, and nine employees.
January 19: Two undergraduate students, one graduate student, and nine employees.
January 18: Four undergraduate students, three graduate students, and 13 employees.
January 14: Three undergraduate students, four graduate students, and seven employees.
January 13: Three undergraduate students, three graduate students, and eight employees.
January 12: Five graduate students, four undergraduate students, and 11 employees.
January 11: Seven employees.
January 7: Seventeen individuals, including two undergraduate students, three graduate students and twelve employees.
January 6: Fourteen individuals, including seven undergraduate students, two graduate students, and five employees.
January 5: Fifty-six individuals, including 22 undergraduate students, 19 graduate students, and 15 employees.
January 4: Ninety-two individuals, including 34 undergraduate students, 18 graduate students, and 40 employees.
December 30: Twenty-six individuals, including 13 undergraduate students, five graduate students, and eight employees.
December 28: Four students and eight employees.
December 23: Two staff members and two undergraduate students.
December 22: Two staff members and two undergraduate students.
December 21: Three staff members and two graduate students.
December 20: Two staff members and an undergraduate student in Caltech housing.
December 17: A staff member who tested positive December 17
December 15: A graduate student who does not live in Caltech housing.
December 3: A graduate student who does not live in Caltech housing.
November 30: Two graduate students who do not live in Caltech housing.
November 29: A graduate student who does not live in Caltech housing.
November 24: A staff member working at an off-site facility who tested positive on Nov. 24.
November 23: A staff member who tested positive on Nov. 22.
November 22: A staff member who tested positive on Nov. 19.
November 16: A staff member who tested positive on Nov. 15.
November 10: A graduate student living in Caltech housing.
November 8: Two staff members who tested positive on Nov. 6.
October 27: A staff member who last accessed campus on October 26.
October 26: A staff member who last accessed campus in 2020.
October 25: A staff member who last accessed campus on October 15.
October 21: A graduate student and a staff member.
October 20: A staff member who last accessed campus on October 19.
October 15: An undergraduate student.
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 who do not live in Caltech housing.
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.