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Campus Alert Archive
UConn

Mumps outbreak grows to six cases; unvaccinated students face campus exclusion

AI-generated · every claim is source-linked
CTdisease outbreakadvisoryhigh confidence
Confirmed Threat

On December 23, 2019, the University of Connecticut Student Health and Wellness office sent an all-student notification confirming three cases of mumps among Storrs campus students during the fall 2019 semester, with the total reaching six cases by the time the outbreak was declared over January 19, 2020. A follow-up secure message on December 30 targeted students identified as higher risk, and the Connecticut Department of Public Health invoked state law authorizing exclusion of unvaccinated students from campus.

Alerts
3
Response
—
Killed
—
Injured
—
Institution
University of Connecticut
Public R1 · CT
All UConn cases →
~32,000 studentsUConn Emergency Notification
Official alert policy
Read when and how UConn says it will use UConn Alert (UConnALERT): summarized, quoted, and analyzed.
Documented Timeline

Alert Sequence

3 messages in sequence · 1 verified verbatim

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Some messages in this sequence are documented (their existence, timing, and channel are sourced) but their exact wording is not preserved in the public record. Those entries appear as placeholders; only confirmed text is displayed.

INITIAL ALERTEmail
Verified verbatim2509 chars
This message is to inform you that University of Connecticut Student Health and Wellness, in conjunction with the Connecticut Department of Public Health, has identified three cases of mumps in students that were enrolled on the Storrs campus in the fall 2019 semester. These cases have been reported at the Storrs campus and there is no increased risk for students at the regional campuses, UConn Law or UConn Health at this time. Mumps is a viral infection that is spread through infected respiratory droplets, like sneezing or coughing.  The infection is not usually dangerous, but can be painful.  Typical signs and symptoms of mumps are swelling of the face/cheek/jaw (parotitis), jaw pain, headache, and/or low grade fever.  Treatment is focused on symptom management. Complications are rare but can be serious. If you would like to read more about mumps, you can visit http://www.cdc.gov/mumps. All UConn students are required to have received two doses of the MMR vaccine, which provides protection against the mumps virus to attend classes. Our records indicate 98% of our undergraduate students are fully vaccinated, however, even those who received two doses of vaccine can become infected. University students are particularly susceptible to the mumps virus, especially if they are in frequent contact with other students in the residence halls, sports teams, or activity groups. A third dose of the MMR vaccine is recommended for students determined to be at higher risk for developing mumps. UConn Student Health and Wellness will be reaching out to students who are deemed as being high risk based on their potential contact with other infected students. For students who are not at high risk, a third dose is not necessary at this time. Students who wish to verify their immunization status may go to our student health portal. Students with signs and symptoms consistent with possible mumps are advised to seek care at Student Health and Wellness or from their primary care provider if they have returned home for winter break. Student Health and Wellness Medical Care hours during winter session are: Monday, Tuesday, Thursday, Friday – 8:30 a.m. to 4:30 p.m. Wednesday – 10:30 a.m. to 4:30 p.m. (closed for medical care December 24, 25, 31 and January 1) For more information, please visit our Mumps FAQ page. Ellyssa Eror, MD, Medical Director UCONN STUDENT HEALTH AND WELLNESS MEDICAL CARE, HILDA MAY WILLIAMS BUILDING 234 GLENBROOK ROAD, U-4011 STORRS, CT 06269-4011 860.486.4700
The notification was sent December 23 -- during winter break, when many students had already returned home -- reflecting both the urgency of the disclosure and the challenge of reaching students who may have already been dispersed across the country.
The instruction to 'not go to the emergency room without calling first' is a critical triage message designed to prevent overwhelmed ERs and to allow infection-control staff to prepare for potentially contagious patients.
The three initial cases grew to six by the time the outbreak was declared over January 19, 2020 -- a timeline consistent with mumps' 12-25 day incubation period allowing sequential transmission chains.
Lane B flip 2026-10-12: full text of the December 23, 2019 'Public Health notification to UConn Storrs campus students' recovered from the official UConn Student Health and Wellness page (live; page metadata gives publication 2019-12-23 16:51). Replaced the reconstruction, which had dropped the paragraph limiting the cases to Storrs, most of the vaccination and third-dose paragraphs, the winter-session clinic hours and the Medical Director's signature block. Empty paragraphs and leading or trailing spaces are dropped, line breaks in the hours and signature blocks are kept. Channel left as email: the page is a repost and does not show delivery.
UPDATEPush
Wording not yet recovered

A message was sent at this point in the sequence; its exact wording has not yet been recovered from the official record, so no text is shown. This site never paraphrases or reconstructs alert wording. Markers like this one keep the emergency's true shape and become word-for-word messages as recovery reaches the source.

Reconstructed from UConn Student Health 'Public Health notification to UConn Storrs campus students' page
ALL CLEARWebsite
Wording not yet recovered

A message was sent at this point in the sequence; its exact wording has not yet been recovered from the official record, so no text is shown. This site never paraphrases or reconstructs alert wording. Markers like this one keep the emergency's true shape and become word-for-word messages as recovery reaches the source.

Reconstructed from UConn Student Health mumps page indicating the outbreak concluded January 19, 2020
Message elements

How the first alert is built

To check this alert, an AI model read it in full 25 separate times, independently. Each read decided whether the message answers each of the six questions and gave a short reason. A final reviewer then weighed all 25 and wrote the plain-English verdict you see when you open a row. The score (for example 22/25) is how many reads agreed; the 25 individual reads are tucked underneath if you want to check them.

This message is to inform you that University of Connecticut Student Health and Wellness, in conjunction with the Connecticut Department of Public Health, has identified three cases of mumps in students that were enrolled on the Storrs campus in the fall 2019 semester. These cases have been reported at the Storrs campus and there is no increased risk for students at the regional campuses, UConn Law or UConn Health at this time. Mumps is a viral infection that is spread through infected respiratory droplets, like sneezing or coughing.  The infection is not usually dangerous, but can be painful.  Typical signs and symptoms of mumps are swelling of the face/cheek/jaw (parotitis), jaw pain, headache, and/or low grade fever.  Treatment is focused on symptom management. Complications are rare but can be serious. If you would like to read more about mumps, you can visit http://www.cdc.gov/mumps. All UConn students are required to have received two doses of the MMR vaccine, which provides protection against the mumps virus to attend classes. Our records indicate 98% of our undergraduate students are fully vaccinated, however, even those who received two doses of vaccine can become infected. University students are particularly susceptible to the mumps virus, especially if they are in frequent contact with other students in the residence halls, sports teams, or activity groups. A third dose of the MMR vaccine is recommended for students determined to be at higher risk for developing mumps. UConn Student Health and Wellness will be reaching out to students who are deemed as being high risk based on their potential contact with other infected students. For students who are not at high risk, a third dose is not necessary at this time. Students who wish to verify their immunization status may go to our student health portal. Students with signs and symptoms consistent with possible mumps are advised to seek care at Student Health and Wellness or from their primary care provider if they have returned home for winter break. Student Health and Wellness Medical Care hours during winter session are: Monday, Tuesday, Thursday, Friday – 8:30 a.m. to 4:30 p.m. Wednesday – 10:30 a.m. to 4:30 p.m. (closed for medical care December 24, 25, 31 and January 1) For more information, please visit our Mumps FAQ page. Ellyssa Eror, MD, Medical Director UCONN STUDENT HEALTH AND WELLNESS MEDICAL CARE, HILDA MAY WILLIAMS BUILDING 234 GLENBROOK ROAD, U-4011 STORRS, CT 06269-4011 860.486.4700

  • Sourceabsent0/0

    Who is sending the alert and who is responding. People act faster on a message from a clearly identifiable, credible sender, such as a named department, the police, or a branded alert system, than on an anonymous notice. A branded signature counts.

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  • Hazardabsent0/0

    What the threat actually is. A complete warning names the specific danger, such as a shooter, a fire, a tornado, or a gas leak, rather than a vague emergency, because people decide what to do based on what they are facing.

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  • Locationabsent0/0

    Where the threat is. Saying whether danger is in a specific building, a part of campus, or area-wide lets people judge their own proximity and choose a safe direction. Without a where, a warning is hard to act on precisely.

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  • Guidanceabsent0/0

    The protective action to take. A clear, specific instruction, such as shelter in place, evacuate, avoid the area, or run-hide-fight, drives faster and more correct protective behavior than describing the threat alone.

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  • Timeabsent0/0

    When the message applies. A timestamp, the word now or immediately, or a phrase like until further notice tells the reader whether the danger is current and how quickly to act.

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  • Impactabsent0/0

    What the hazard could do to the people in its path. Beyond naming the threat, a complete warning conveys its potential consequences or severity, such as that a tornado can level buildings or that a leak could be explosive, so recipients grasp how much danger they are in. Research on warning message content finds that a concrete impact statement helps people personalize their risk and act sooner.

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Systematic AI judgments with visible reasoning, not human-validated codings.

About this analysis
Context

Background

UConn's fall 2019 mumps outbreak was part of a national resurgence of mumps on US college campuses that began around 2016, driven partly by waning immunity in populations that received two-dose MMR vaccines in childhood. Between 2016 and 2019, more than 6,500 mumps cases were reported nationally, with college campuses disproportionately affected. UConn's outbreak -- six cases on the Storrs campus, identified December 23, 2019 -- was managed through a two-tier communication strategy: an all-campus email on December 23 for general awareness, followed by a targeted secure message on December 30 to students identified as higher risk. The Connecticut Department of Public Health invoked state law authorizing exclusion of unvaccinated students from campus -- a significant legal authority used at several institutions during the national resurgence. A third MMR dose was recommended for high-risk students, reflecting emerging evidence that two-dose immunity wanes in the dense residential environments of large universities. NBC Connecticut and CBS New York reported the initial three cases; the outbreak was declared over January 19, 2020.
Analysis

Key Findings

A two-tier communication strategy was used: a general all-campus email December 23, followed by a targeted secure message December 30 to higher-risk students identified through contact tracing
Connecticut state law authorizing exclusion of unvaccinated students from campus was invoked -- a significant but underreported legal tool used during the national 2016-2019 mumps resurgence
A third MMR dose was recommended for high-risk students, reflecting emerging evidence that two-dose immunity wanes in the dense residential settings of large universities
The outbreak concluded January 19, 2020 -- covering the full maximum incubation period beyond the last confirmed late-December case
Outcome
Six total cases were identified on the Storrs campus. The outbreak concluded January 19, 2020. Per Connecticut law, students without documented MMR vaccination or immunity were subject to exclusion from campus during the outbreak period.
Provenance

Sources

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Cite this case

Campus Alert Archive. "University of Connecticut: Mumps outbreak grows to six cases; unvaccinated students face campus exclusion." Incident of December 23, 2019. Added May 2026; last updated October 2026. https://campusalertarchive.com/case/university-of-connecticut-mumps-outbreak-2019-12-23/

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Alert text quoted on this page remains the work of the issuing institution; the archive is a secondary source.

Tags
mumpsdisease-outbreakpublic-healthmmr-vaccineconnecticutadvisorystate-lawwinter-break
Added May 2026Updated October 2026Via ingestion