But last month, an unvaccinated toddler in Texas became the first to pass away from the virus in a decade.
A third fatality in New Mexico is still being investigated, while a second youngster from Texas also passed away earlier in April.
Describe measles.
The virus that causes measles is extremely contagious and is spread by sneezing and coughing. A high temperature, cough, runny nose, red, watery eyes, and a red rash are some of the symptoms.
Complications from the virus can include diarrhea or ear infections, especially in children younger than five.
In more severe situations, it may result in encephalitis (brain swelling) and pneumonia.
