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What is Measles? (Introduction)

Reviewed by medical experts · For informational purposes only

Introductory summary

What is measles: a highly contagious viral illness with fever and rash, who is at risk and why vaccination matters.

Measles (rubeola) is a highly contagious viral illness. It causes fever, cough, runny nose, red eyes and a typical red rash. It is preventable with two doses of the measles vaccine.

How contagious it is

Measles is one of the most infectious diseases known. One infected person can pass it on to about 9 out of 10 unvaccinated people nearby. The virus spreads through the air when an infected person coughs or sneezes, and can stay in a room for up to 2 hours.

Who is most at risk

  • Unvaccinated children, and babies too young for the vaccine
  • Pregnant women who are not immune
  • People with weak immunity or severe malnutrition
  • Travellers to areas with outbreaks

How long it lasts

Symptoms start 10 to 14 days after exposure. The illness usually lasts about 1 to 2 weeks. Most healthy children recover, but measles can cause serious complications such as pneumonia and brain inflammation, so a doctor should see every suspected case.

Ayurvedic view

Ayurveda describes a rash-fever illness called Romantika or Masurika-like conditions. This is a traditional framework and does not replace vaccination or medical care.

Key point

Measles is a vaccine-preventable infection. Check your child's vaccine record and speak to a doctor if there is fever with a rash.

Is measles the same as rubella?

No. Rubella is caused by a different virus and is usually milder, but it can harm an unborn baby. The combined MR vaccine protects against both. Measles is also sometimes confused with chickenpox or dengue, so a doctor's diagnosis matters.

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