Mumps

4 Active Outbreaks

Mumps is an acute viral infection caused by the Mumps virus, primarily affecting the salivary glands, particularly the parotid glands. This leads to characteristic painful swelling in the face and jaw area. While historically common in children globally, its incidence has drastically declined in vaccinated populations.

3
Countries Affected
759
Recent Cases (30d)
4
Active Outbreaks
28d ago
Last Updated

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What is Mumps?

Mumps has been recognized as a distinct disease for centuries, with early descriptions by Hippocrates. The **Mumps virus** was isolated in 1934, leading to the development of an effective vaccine. The introduction of the mumps vaccine significantly reduced its global burden and shifted its epidemiology.

Symptoms

  • Fever (low-grade to moderate)
  • Headache and muscle aches
  • Fatigue and loss of appetite
  • Swollen, tender salivary glands (parotitis), typically below the ears on one or both sides of the face.

Transmission

Mumps spreads through respiratory droplets from an infected person, released by coughing, sneezing, or talking, especially in close contact. It can also be transmitted through direct contact with saliva or by touching contaminated surfaces and then touching one's mouth or nose. An infected person is contagious for several days before and after symptoms appear.

Contagious Period: Varies by disease

Prevention

  • MMR (Measles, Mumps, Rubella) vaccine: Two doses are highly effective in preventing mumps.
  • Practicing good hand hygiene (frequent hand washing).
  • Avoiding close contact with infected individuals.
  • Covering coughs and sneezes.

Live Mumps Global Case Map

3 countries with reported activity. Updated from real-time surveillance data.

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Active Outbreaks & Recent Cases

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Data sources: BEACON, ProMED, WHO, CDC, and 50+ national health agencies

✓ Live data updated in real-time from global health sources

Two months into 2026, Maryland mumps cases already six times last year's total

United States Minor Outlying Islands, Baker Island 2026-02-20
Active

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Azerbaijan's Health Ministry dismisses claims of mumps outbreak in Baku, urges parents to rely on official information

Azerbaijan 2026-07-11
Active

Posts claiming that mumps (epidemic parotitis) is spreading widely in Baku have recently been circulating on social media. The Ministry of Health of the Republic of Azerbaijan states that these reports do not reflect the current epidemiological situation, APA reports. This is stated in a statement issued by the Ministry of Health. It was noted that the current epidemiological situation regarding mumps in the country is stable. "The registered cases consist of isolated sporadic infections, and no epidemic or mass outbreak has been recorded. The current situation is under constant epidemiological surveillance by the relevant medical institutions, and the necessary preventive and anti-epidemic measures are being implemented consistently. Epidemic parotitis is observed mostly among unvaccinate...
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Azerbaijan's Health Ministry dismisses claims of mumps outbreak in Baku, urges parents to rely on official information

Azerbaijan 2026-07-19
Active

Posts claiming that mumps (epidemic parotitis) is spreading widely in Baku have recently been circulating on social media. The Ministry of Health of the Republic of Azerbaijan states that these reports do not reflect the current epidemiological situation, APA reports. This is stated in a statement issued by the Ministry of Health. It was noted that the current epidemiological situation regarding mumps in the country is stable. "The registered cases consist of isolated sporadic infections, and no epidemic or mass outbreak has been recorded. The current situation is under constant epidemiological surveillance by the relevant medical institutions, and the necessary preventive and anti-epidemic measures are being implemented consistently. Epidemic parotitis is observed mostly among unvaccinate...
Read Full Article

Mumps, Canada

Canada 2026-06-08
Active

This event envelope contains reports on mumps in Canada.

Source: BEACON - View Full Report

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Expert Resources & References

Trusted information from leading health organizations

CDC

Official guidance from the U.S. Centers for Disease Control and Prevention

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WHO

Global disease surveillance and guidelines from the World Health Organization

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Research

Latest peer-reviewed research and clinical studies

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Medically Reviewed Content

Disease information on Virus Watcher is reviewed by our Chief Epidemiologist, a former CDC lead analyst for FluSight forecasting. Outbreak data is aggregated from verified sources including BEACON, ProMED, WHO, CDC, and 50+ national health agencies. This information is for educational purposes and should not replace professional medical advice.

Last reviewed: 2026-08-17

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