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Weekly COVID-19 Tests & Cases

The graphs and tables below show weekly trends in University-wide tests and new positive cases since June 1, 2020.

  • In academic year 2020-21, only a limited number of students and personnel were authorized to be on campus and to participate in Harvard’s COVID-19 screening program; the majority of Harvard’s community worked and learned remotely during that time.
  • In fall 2021, the University is welcoming many more community members back to campus to resume in-person academic and work activities, and to participate in Harvard’s COVID-19 screening program.1

Individuals authorized to participate in Harvard’s COVID-19 screening are tested regularly (see testing protocols). The data reflected below is not combined with other testing sources or providers.

The testing and case data in the graphs and tables below is updated weekly.

For daily updates on cumulative tests, cases, and quarantine and isolation data, see the results dashboard.

Total Tests Conducted by Week

Total New Positive Cases by Week

Footnotes:

  1. Individuals authorized to participate in Harvard’s COVID-19 screening include: those individuals authorized to be on campus; those who are authorized to participate in the University’s off-campus undergraduate pilot program; and, any off-campus individuals who, based on contact tracing activities, are invited to be screened due to possible exposure to another Harvard community member known to have the virus.
  2. “Total tests” is cumulative and includes repeat tests that are required of students, faculty, staff, and other affiliates who are authorized to be on campus.
  3. “Graduate Students” and “Undergraduate Students” includes students who are eligible to participate in Harvard’s testing program; this includes students living in dorm-style housing, those working in labs, and those authorized to be on campus for an academic or work purpose.
  4. “Faculty, Staff, and Other Affiliates” includes faculty, academic and non-academic staff, and others (such as contractors) who are eligible to participate in Harvard’s testing program; this includes faculty or staff performing essential work, living on campus, or authorized to be on campus.

Notes:

  • Cumulative data reflects Harvard’s initiation of protocols in early June 2020 for regular screening through COVID-19 testing in conjunction with the re-opening of science laboratory facilities under the Commonwealth of Massachusetts’ phased re-opening plan.
  • As stated above, Harvard data reflects results of mandatory screening for individuals who are authorized to be on Harvard’s campus and who do not report COVID symptoms.
  • Data are presented according to the date tests are administered. Counts for most recent dates may be incomplete, but will be updated as results are reported.
  • The tables and graphs are informational only and is not intended to be used as public health guidance.