Mumps

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Mumps: a short, easy-to-understand overview

What it is
Mumps is a contagious viral illness caused by the mumps virus. Humans are the only natural hosts. It is vaccine-preventable, most often diagnosed in children but also seen in teens and adults.

Symptoms
- The most common sign is swelling of the cheeks and jaw area (parotitis) caused by inflamed salivary glands.
- Early symptoms may include fever, headache, tiredness, muscle pains, and loss of appetite.
- About one-third of people may not have noticeable symptoms.
- Other possible issues (more common in teens and adults): testicular swelling (orchitis) in males after puberty, meningitis or encephalitis (brain-related), pancreatitis, and rarely deafness.
- Most people recover within a couple of weeks.

How it spreads
- Mumps spreads mainly through saliva and droplets when an infected person coughs, sneezes, or talks.
- It can spread from about a week before symptoms start to about a week after symptoms begin.
- Incubation (time from exposure to symptoms) is about 7–25 days (average ~16–18 days).

Diagnosis
- In places with common mumps, doctors may diagnose based on symptoms and exposure history.
- Lab tests used in other settings include detecting mumps antibodies or finding viral RNA in saliva, throat swabs, urine, or, in some CNS cases, cerebrospinal fluid.

Treatment
- There is no specific antiviral treatment for mumps.
- Care is supportive: rest, fluids, and medicines to relieve pain and fever (avoid giving aspirin to children).
- Isolating someone with mumps helps prevent spreading the virus.
- Most people recover on their own; antibiotics aren’t effective against a viral infection unless there's a secondary bacterial infection.

Prevention
- Vaccination is key. The MMR vaccine (measles, mumps, rubella) is commonly given in childhood and sometimes to older children or adults who need it.
- A second dose improves protection. Some vaccines are given as MMRV (which also protects against chickenpox and shingles).
- High vaccination coverage has greatly reduced mumps in many countries, but outbreaks can still occur, especially in crowded settings like schools, colleges, military camps, and sports teams.
- Common side effects are usually mild; serious side effects are rare.

Prognosis
- Most people do well and recover without long-term problems.
- Lifelong immunity usually follows infection or vaccination.
- Complications are possible but uncommon; serious outcomes (like deafness or meningitis) are rare.

When to seek care
- If you have swelling of the cheeks or jaw with fever, or you’re a post-pubertal male with testicular pain, or you have signs of meningitis (severe headache, stiff neck, confusion).
- If you’re in a setting with an active mumps case, or you’re not up to date with vaccines and are exposed.

Outbreaks and public health note
- Vaccination has dramatically reduced mumps, but it can still appear, especially where immunity wanes or vaccination rates are imperfect.
- Keeping vaccines up to date and practicing good hygiene helps prevent spread.