Maryland health officials are reporting a notable increase in mumps cases this year, a shift from recent trends. As of February 19, 2026, the state has recorded 19 confirmed cases and seven probable infections, primarily affecting adults in the Baltimore metropolitan area. This represents a significant rise compared to the average of fewer than six cases annually observed between 2020 and 2024, raising concerns among public health experts.
The Maryland Department of Health (MDH) is actively investigating the outbreak to determine if the cases are linked, but no single source has yet been identified. Whereas the increase is concerning, officials emphasize that the overall risk to the public remains low, largely due to Maryland’s high vaccination rates. However, the surge underscores the importance of ensuring residents are up-to-date on their vaccinations, particularly the Measles, Mumps, and Rubella (MMR) vaccine.
Understanding Mumps and Its Symptoms
Mumps is a contagious viral infection spread through respiratory droplets or close contact with saliva. According to Dr. Meg Sullivan, Deputy Secretary for Public Health Services, the illness typically begins with flu-like symptoms, including fever, fatigue, and loss of appetite. “This is a vaccine-preventable, viral infection that is spread from person-to-person…contagious and can cause…viral symptoms where you may have fever, not feel well, achy,” Dr. Sullivan stated. The most recognizable symptom is swelling of the salivary glands, located below and in front of the ears, which can be quite painful.
While often mild, mumps can lead to complications, particularly in adults. These can include inflammation of the testicles or ovaries, pancreatitis, and, in rare cases, more serious issues like meningitis, encephalitis, and hearing loss. The Maryland Department of Health notes that symptoms typically develop two to four weeks after exposure.
Vaccination Remains Key to Prevention
Public health officials consistently highlight vaccination as the most effective way to prevent mumps infection. The MMR vaccine is a two-dose series routinely recommended for children, with the first dose administered between 12 and 15 months of age and the second between 4 and 6 years old. CBS News reports that health officials are urging individuals to check their vaccination status and consult with their healthcare providers if they are unsure.
The Maryland Department of Health similarly emphasizes that the MMR vaccine provides protection against measles, which is currently circulating in the U.S. And internationally. The Maryland Vaccine Program offers American Academy of Family Physicians recommended vaccines through local health departments, free of charge to those 19 and older who are uninsured or underinsured.
National Context and Recent Trends
The increase in mumps cases isn’t limited to Maryland. Data from the Centers for Disease Control and Prevention (CDC) showed nine mumps cases reported across six states as of January 29, 2026, including three in Maryland, along with one case each in Alabama, Florida, Indiana, Nebraska, and Virginia. Recent reports indicate that 2025 saw a total of 248 cases across the U.S., a slight decrease from the 400 cases reported in 2024, but still a notable presence of the virus.
The last significant surge in mumps cases occurred in 2019, with 3,780 reported cases nationwide. While the current outbreak is not yet at that level, health officials are closely monitoring the situation and encouraging preventative measures.
As health officials continue to investigate the current increase in mumps cases in Maryland, the focus remains on vaccination and public awareness. Residents are encouraged to verify their immunization records and consult with healthcare professionals if they have any concerns. The situation will likely continue to be monitored closely in the coming weeks and months to assess the extent of the outbreak and the effectiveness of preventative measures.
Disclaimer: This information is intended for general knowledge and informational purposes only, and does not constitute medical advice. It’s essential to consult with a qualified healthcare professional for any health concerns or before making any decisions related to your health or treatment.
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