13 doctors weighed in:

How contagious is measles?

13 doctors weighed in
Amanda Xi
General Practice
9 doctors agree

In brief: Extremely

Measles is transmitted via the respiratory route and an infected person can infect others up to 7 days prior to showing symptoms and up to 3-4 days after the onset of symptoms.
It is important to protect yourself against this infection with the the MMR (mumps, measles and rubella) vaccination.

In brief: Extremely

Measles is transmitted via the respiratory route and an infected person can infect others up to 7 days prior to showing symptoms and up to 3-4 days after the onset of symptoms.
It is important to protect yourself against this infection with the the MMR (mumps, measles and rubella) vaccination.
Amanda Xi
Amanda Xi
Answer assisted by Amanda Xi, Medical Student
Thank
Dr. Robert Jackson
Dermatology
3 doctors agree

In brief: Very

Very if you don't have immunity.

In brief: Very

Very if you don't have immunity.
Dr. Robert Jackson
Dr. Robert Jackson
Thank
Get help from a real doctor now
Dr. Adam Smith
Board Certified, Internal Medicine
13 years in practice
382K people helped
Continue
108,000 doctors available
Read more answers from doctors