What was measles like before the vaccine?

Measles was a familiar childhood infection because the virus passed efficiently through the air and respiratory secretions. Illness could begin with fever, cough, runny nose, and sore eyes, followed by a rash that starts on the face and moves down the body. Complications can include breathing problems, ear infection, dehydration, or inflammation affecting the brain.

Vaccination changed how often people encounter measles, but it did not make the virus harmless. A [Fever](/symptoms/fever/) or rash can have many causes, so suspected measles needs clinical advice. Read more about [Measles](/conditions/measles/).

Check your vaccination record and discuss [MMR Vaccination](/treatments/preventive-care-and-vaccination/mmr-vaccination/) with a clinician if doses are missing or uncertain. If illness or exposure is possible, call before visiting a clinic, avoid close contact, and follow public-health instructions. A [GP Consultation](/treatments/consultations-and-assessment/gp-consultation/) can help plan assessment and household precautions.

Get urgent care for difficult breathing, a seizure, confusion, severe dehydration, or unusual difficulty waking. Prompt advice is especially important for infants, pregnancy, and weakened immunity. [Swollen Glands](/symptoms/swollen-glands/) may accompany infections, but that symptom does not show that measles is the cause.

Ask whether vaccination can be given now, what to do after a known exposure, how long to avoid shared spaces, and which changes should trigger urgent review.