HealthInfo West Coast-Te Tai Poutini
Measles
Mate karawaka
Measles is caused by a virus. It is very infectious, meaning it spreads very easily.
When someone with measles coughs, sneezes and talks, they release droplets into the air. You can catch measles by breathing in the droplets. You can also catch it from touching an infected surface or object such as a door handle.
People who have not been vaccinated or have a poor immune system have a higher risk of getting measles.
Measles can sometimes cause serious problems. This includes swelling on the brain (encephalitis), which can cause brain damage. A small number of people die from this complication.
Symptoms of measles
Symptoms of measles include fever, cough, inflamed red eye (conjunctivitis) and runny nose.
The fever usually starts 7 to 18 days after you are exposed to the virus. After 2 to 5 days a rash appears, which is red with small, raised bumps. It usually starts behind your neck and ears before spreading to the rest of your body. You can see pictures of the measles rash at DermNet.
Diagnosing measles
If you think you or your tamaiti (child) has measles, phone your general practice team or Healthline (0800-611-116) for advice. Do not visit a general practice or after-hours clinic without calling first as you may risk passing the virus on to others.
Your general practice team may arrange for a throat swab and a blood sample to be tested.
Treating measles
There is no medicine to treat measles. The treatment aims to relieve symptoms.
Rest, drink plenty of fluids and use paracetamol or ibuprofen to help with fever and pain. Ask your general practice team or pharmacist for advice about what to take.
Phone your general practice team again if your tamaiti becomes very drowsy, confused or unresponsive.
Preventing the spread of measles
If you have measles, you will be infectious from 4 full days before the rash appears to 4 full days after the rash appears.
If you are not immune and think you may have been exposed to measles, you will need to isolate. This means staying home from school or work. You will need to stay in isolation for up to 14 days from the time you may have become infected.
You will need to have no contact with unimmunised people. This includes not visiting your general practice team or after-hours clinic. Phone your general practice team or Healthline (0800-611-116) for advice. Do not have any visitors to your home. If others in your household are unimmunised, they will also need to stay in isolation.
Ask your general practice team for advice about whether you need to stay in isolation and for how long.
For more information on managing in isolation, see Quarantine & isolation.
Preventing measles
Vaccination is the best way to prevent measles. The MMR vaccine is used to prevent measles, mumps and rubella. Tamariki (children) receive this vaccine at 12 months and 15 months as part of the National Immunisation Schedule. Immunisation is 99% effective after the second dose.
People born before 1969 have usually had measles and are considered immune.
From 1969 to 1992, tamariki were only given a single dose of the measles vaccine. If you were born in this period, you are more at risk of catching measles. So, you are eligible for a second funded measles vaccine through your general practice.
Measles during pregnancy
Pregnant women who become ill with measles during pregnancy are at risk of miscarriage. They are also at risk of going into labour early and having pēpi (babies) with low birth weights.
If you are pregnant and think you may have measles or if you have come into contact with someone with measles, take action. Call your general practice team or lead maternity carer as soon as possible.
Pregnant women should not get the measles vaccine during pregnancy. But close contacts of pregnant women should be vaccinated to help protect both the mother and unborn baby from exposure.
HealthInfo recommends the following pages
- Health Information and Services– Measles
This page explains measles, including the symptoms, possible complications and prevention.
- KidsHealth – Measles in children
Information about measles in tamariki. This includes photographs, links to further information and information about immunisation.
Written by HealthInfo clinical advisers. (Measles during pregnancy information adapted from Healthify He Puna Wairoa). Last reviewed May 2025.
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Review key: HIMEA-49717
