Self Care Articles

Measles Exposure

2026-03-01

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Is this your child's symptom?

  • Exposure (close contact) to person with confirmed measles.
  • Your child has no symptoms of measles (rash, cough or fever).

Measles Exposure (Close Contact): Definition

Being near an infected person puts you at risk for getting measles. Examples of close contact are:

  • Living in the same house. Household contacts have the highest risk of catching measles.
  • For young children, being in the same childcare room or carpool.
  • Sharing eating utensils or drinking glasses.
  • Face-to-face contact such as kissing or hugging.
  • Being coughed or sneezed on.
  • Having prolonged close conversation (within 6 feet) of an infected person.
  • Caution: measles is one of the most contagious of all viruses. Even casual contact in the same school can put unvaccinated children at risk for infection.

Measles Transmission: How it Spreads

  • Cause: measles is caused by the Measles virus.
  • Spread: measles is a very contagious virus. Reason: It is spread by tiny airborne particles that carry the virus and can float in the air. These can remain in a closed area for up to 2 hours after the person with measles has left.
  • Also, respiratory droplets from coughing or sneezing on other people can spread the virus. They can cause disease by getting in the eyes, nose or mouth.
  • Incubation period: 10 to 12 days to onset of respiratory symptoms. Another 2 to 4 days to onset of the measles rash. Average time from exposure to rash is 14 days (range: 7 to 21 days).
  • Contagious period: from 4 days before until 4 days after the start of the rash.
  • Attack rate: the chance of getting measles after exposure is over 90% in unvaccinated persons

Measles (MMR) Vaccine: Age When Normally Given (AAP)

  • All children need to get their measles vaccines.
  • Children normally get their first vaccine at age 12 months. This gives 95% protection.
  • Children normally get their second vaccine (booster) at age 4 years. This gives 99% protection.
  • Protection against measles infections is permanent and lifelong.

Measles Symptoms

  • Measles starts with red eyes, runny nose, cough and fever. Respiratory symptoms continue for 2 to 5 days before the onset of the measles rash.
  • Koplik spots are tiny white specks on the lining of the mouth (inner cheeks). They appear 1 to 2 days before the onset of the rash. These are only seen with measles but can be difficult to see.
  • The measles rash starts on day 2 to 5 of the illness. It's a blotchy red rash that starts on the face. The rash spreads downward to involve the entire body over the next 3 days. The rash is deep red. The rash is usually gone by 7 days.

When to Call for Measles Exposure

When to Call for Measles Exposure
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Copyright 2000-2026 Schmitt Pediatric Guidelines LLC. Date Updated: 2025-12-01T09:03:28.600Z Version 0.2

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Changes from the previous version.

bullet point changed from "These are only seen with measles but can be difficulty to see" to "These are only seen with measles but can be difficult to see"