Mumps
Effectively prevented by the 3-in-1 MMR combination vaccine.
Transmission
Through the respiratory tract by saliva, droplets when coughing, and sharing bowls and chopsticks.
Symptoms
Fever, headache, tiredness, painful swelling of the parotid salivary glands on one or both sides that changes the shape of the face, pain on swallowing.
Complications
Orchitis in males (which can cause testicular atrophy and infertility), oophoritis, aseptic meningitis, deafness.
People at high risk
School-age children, adolescent boys.