Can adults get mumps?

Oct 18, 2025 Source: Cainiu Health
Dr. Wang Lei
Introduction
In general, whether adults can contract mumps depends on their vaccination status. Adults who have not received the mumps vaccine or whose vaccine protection has worn off may develop mumps; those who have been properly vaccinated and still have effective immunity are usually unlikely to get mumps. It is important in daily life to avoid close contact with individuals infected with mumps and to maintain good personal hygiene.

In general, whether adults can contract mumps depends on their vaccination status. Adults who have not been vaccinated against mumps or whose vaccine protection has expired may develop the disease; those who have been properly vaccinated and still have effective immunity are usually unlikely to get mumps. The detailed analysis is as follows:

If an adult has never received the mumps vaccine, or if a long time has passed since vaccination leading to a decline in antibody levels, they are susceptible to infection upon exposure to the mumps virus. After infection, symptoms such as swelling and pain in the salivary glands may occur, along with fever, headache, and difficulty chewing. Prompt isolation and symptomatic treatment under medical guidance are necessary to prevent complications.

If an adult has completed the recommended mumps vaccination series and remains within the vaccine's protective period, effective antibodies in the body can defend against viral infection, making mumps unlikely. Even upon exposure to the virus, they may remain asymptomatic or experience only mild symptoms with a quick recovery due to antibody protection.

It is important in daily life to avoid close contact with individuals infected with mumps, maintain good personal hygiene, wash hands frequently, and ensure proper ventilation. Adults who have not been vaccinated or whose vaccine protection has worn off should consult relevant healthcare providers for timely booster vaccination to reduce the risk of infection. If unusual swelling of the salivary glands occurs, prompt medical evaluation is advised to determine the cause.

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