Yale COVID-19 Statistics

CURRENT YALE COVID-19 ALERT LEVEL
Yellow: Low to Moderate Risk

DESCRIPTION OF ALERT LEVELS

These data reflect results from Yale’s asymptomatic testing program for students (both undergraduate and graduate/professional), faculty, and staff, along with tests of symptomatic students. Unlike testing in other parts of the nation (much of which is limited to symptomatic testing), we are proactively testing students and faculty/staff in contact with students, not just those who are experiencing symptoms or have known contact with a positive case. As a result, many of the positive test results we report are asymptomatic infections that other testing programs would miss.
 
These counts have been revised to count only unique positive cases (listed by the date of that individual’s first positive test) and to count unique individuals tested per day (excluding any duplicate test records). Tests and positive cases are shown by date on which a test was collected. There is a 2-3 day delay between when tests occur and when data become available to include in the tables above. These counts may change further as they are updated.

Learn more about Yale’s testing program


Isolation — On-campus Capacity

Isolation room capacity available

97%

Alert Levels

Green: Lower Risk


What does it mean for campus?
Cases are infrequent or sporadic and transmission controlled.

What to expect:

  • Practice health and safety measures: physical distancing, masks required, daily health check, hand washing.
  • Combination of in-person/hybrid and online learning.
  • Capacity for on-campus spaces at 50% or less.
  • Gathering size limited per university event guidelines.
  • Visitors are not allowed on campus.
  • Travel is strongly discouraged and restrictions apply, see travel guidelines.
  • Students are required to adhere to all governmental guidelines.

Yellow: Low to Moderate Risk


What does it mean for campus?
Incidence of the virus remains low, but indicators show increased or potential for increase in transmission, and may include high levels of student travel to campus.

What to expect:

  • Practice health and safety measures: physical distancing, masks required, daily health check, hand washing.
  • Combination of in-person/hybrid and online learning.
  • Gathering size limited per university event guidelines.
  • Visitors are not allowed on campus.
  • Travel is strongly discouraged and restrictions apply; see travel guidelines.
  • Additional steps will be taken on all or parts of campus to mitigate the potential for increased transmission and may include, for example:
    • Quarantine for groups or individuals arriving to campus.
    • Targeted quarantine for campus locations with clusters of infection.
    • Targeted restriction of on-campus access.
  • Students are required to adhere to all governmental guidelines, including mandatory quarantine when arriving from designated states, territories, or countries.

Orange: Moderate Risk


What does it mean for campus?
Incidence has increased above baseline modeling and/or indicators show rates of infection may be increasing.

What to expect:

  • Practice health and safety measures: physical distancing, masks required, daily health check, hand washing.
  • Frequency of testing may be increased for some populations.
  • Additional steps will be taken on all or parts of campus and may include, for example:
    • Classes moved to online only.
    • Targeted quarantine for campus locations with clusters of infection.
    • Students residing in on-campus housing restricted to campus; those living off-campus restricted from campus.
    • Only employees in support of residential students, research, and clinical operations are asked to remain on campus; other employees who returned to campus to support reactivation activities asked to work remotely.
    • Gatherings of any size - instructional or non-instructional – prohibited until transmission rates decrease.
    • Research operations are moved to Phase 2 or Phase 1.
  • Visitors are not allowed on campus.
  • Travel is strongly discouraged and restrictions apply, see travel guidelines.
  • Government guidance may change and will be followed.

Red: Higher Risk


What does it mean for campus?
Significant increase in incidence and/or concerns related to available quarantine, isolation and/or local hospital capacity.

What to expect:

  • Practice health and safety measures: physical distancing, masks required, daily health check, hand washing.
  • Frequency of testing may be increased for some populations.
  • Campus activities will be significantly limited; restrictions may include, for example:
    • Classes moved to online only.
    • Campus operations highly restricted.
    • On-campus Yale College students must remain in their rooms (except to receive meals or for testing) until such time as it is safe for them to return home. Provision will be made for students who cannot safely return to their homes.
    • Off-campus Yale College students in the New Haven area are strongly encouraged to return to their permanent homes.
    • Research operations are moved to Phase 1 or Phase 0.
    • Only essential employees and those needed to support residential students and research operations allowed on campus.
  • No gatherings of any size are permitted.
  • Visitors are not allowed on campus.
  • Travel is strongly discouraged and restrictions apply, see travel guidelines.
  • Government guidance may change and will be followed.

The summary data in the “Yale Data at a Glance” section reflect asymptomatic testing, and include symptomatic test results for students only, due to privacy guidelines. As a result that summary does not include symptomatic test results among faculty or staff, nor does it capture results for other community members who are members of Yale Health (including dependents and retirees). The data below reflect all testing completed by Yale Health across all populations, both symptomatic and asymptomatic. This gives the most complete picture available of the entire Yale community. These data are updated on a weekly basis, so will lag the results in the “Yale Data at a Glance” section.

Positive Cases at Yale, Counts

Rolling seven-day average of new COVID-19 cases among the Yale Health population.

Daily new cases at Yale

Yale new cases by group


Positive Cases at Yale, %

Rolling seven-day average positivity rate, or the proportion of positive tests out of all COVID-19 tests for a certain group.  Note that the student and some employee populations participate in frequent asymptomatic testing. This impacts the positivity rate for those populations.Testing Positivity Rate at Yale

Yale positivity rate by group

Positive Cases in Connecticut

Connecticut daily new cases overall

Connecticut daily new cases by county

Data primarily sourced from Connecticut Department of Public Health, with data prior to March 24 sourced from the New York Times. Beginning in July, Connecticut began to report data only on weekdays. On July 23, Connecticut reported 440 previously-unreported positive tests administered by an out-of-state lab, and on July 28, Connecticut reported an additional 384 such cases. These backlogged cases have been excluded from rolling averages.
View “Positive Cases in Connecticut” data in a text-based table


Hospitalizations in Connecticut

Connecticut hospitalizations overall

Connecticut hospitalizations by county

Data primarily sourced from Connecticut Department of Public Health, with data prior to March 24 sourced from the New York Times. Beginning in July, Connecticut began to report data only on weekdays.
View “Hospitalizations in Connecticut” data in a text-based table


Deaths in Connecticut

Connecticut daily deaths overall

Connecticut daily deaths by county

Data primarily sourced from Connecticut Department of Public Health, with data prior to March 24 sourced from the New York Times. Beginning in July, Connecticut began to report data only on weekdays.
View “Deaths in Connecticut” data in a text-based table