Measles (rubeola) is an illness caused by one of the most contagious viruses.
In some cases, measles may cause severe illnesses including pneumonia or encephalitis.
While encephalitis is rare, this swelling of the brain requires hospitalization and intensive treatment. It can cause seizures, hallucinations, permanent brain damage, blindness, hearing loss, and memory loss.
If 10 individuals without immunity come in contact with measles, up to 9 of them will contract the disease.

Measles Fact Sheet
Available in English, Spanish, Haitian Creole, and Portuguese.
If You Suspect Measles
First, call your health care provider, treatment facility, or county health department and let them know your concerns. DO NOT go directly to your health care provider’s office or facility, or the county health department. You will be given instructions on getting seen in a timely manner, and how you can avoid exposing other people to measles.
Transmission
Measles spreads through the air when an infected person breathes, coughs, or sneezes. Measles can remain infectious in the air and on surfaces for up to two hours after an infected person leaves an area.
Those with a prior history of infection or who have received the full series of the measles, mumps, rubella (MMR) immunization are 98% protected and are unlikely to contract measles.
Symptoms
Measles symptoms appear 7-14 days after contact with the virus and include:
- High fever up to 105° F
- Red, watery eyes
- Cough
- Runny nose
The most common symptom of measles is a rash that often develops on the face and neck, but can spread to the entire body. Measles rash appears 3-5 days after the first symptoms.
Individuals At-Risk of Severe Illness
Those at increased risk of serious illness are:
- Pregnant women who catch measles are at risk of premature birth or having a low-birth-weight baby.
- People with compromised immune systems, such as from leukemia and HIV infection, may be especially at risk for measles complications.
- Children and adults that have underlying health conditions
- Infants under 12 months
Treatment
Since measles is caused by a virus, there is no specific treatment. Medications can help manage symptoms. However, based on exposure time frame, susceptible contacts may be candidates for post-exposure prophylaxis through MMR or immunoglobulin through their health care provider.
Vitamin AÂ supplementation may be beneficial when administered under the supervision of your health care provider.
Data and Statistics
Florida CHARTS
View data about measles, both statewide and county-specific.