Measles update 07/23/2026
2 NEW CASES OF MEASLES IN ST. MARY’S COUNTY-
if you have been at these locations, please refer to our what to do if you are exposed section:
J&R Feeds LLC (28038 Thompsons Corner Road, Mechanicsville, MD 20659) from Thursday, July 16 – Tuesday, July 21, 2026
MedStar Health Urgent Care in Charlotte Hall (37767 Market Drive, Ste 100, Charlotte Hall, MD 20622) on Monday, July 20, 2026 from 8:30 a.m. – 1:15 p.m.
MedStar St. Mary’s Hospital Emergency Room (25500 Point Lookout Road, Leonardtown, MD 20650) on Tuesday, July 21, 2026 from 11:00 a.m. – 6:45 p.m.
We have been receiving many calls from our patients regarding their measles vaccination status.
For all patients, older than 12 months of age, you should have received one dose of the MMR vaccine which is 93%-95% effective. Those who are 4 years and older should have received two doses of the MMR vaccine which is 97%-99% effective.
If you are fully vaccinated and are exposed to measles and have a normal immune system, there is nothing to do but to monitor for symptoms in the next 21 days. It is very unusual for a fully vaccinated individual to contract measles.
If you are older than 6 months but under 12 months and will be traveling out of the country or to an area with measles outbreak, you should contact our office to discuss receiving the MMR vaccine at least 2 weeks prior to travel.
If you are older than 12 months but under 4 years, and will be traveling out of the country or to an area with measles outbreak, you should contact our office to discuss receiving the 2nd MMR vaccine at least 2 weeks before travel.
Measles fact sheet
Measles exposure
If you have been exposed to measles and are between 6 months to 12 months, you are eligible to receive an MMR vaccine within 72 hours of exposure. Please contact our office to discuss.
If you are exposed to measles and are between 12 months and 4 years, you are eligible to receive your 2nd MMR vaccine within 72 hours of exposure as long as it has been at least 28 days from your 1st MMR vaccine.
MMR vaccine within 72 hours of exposure is 74% effective.
If you have symptoms after measles exposure such as fever, cough, runny nose, red eyes, or a rash, please call our office to discuss. Please DO NOT walk in.
WHAT IF THERE IS AN OUTBREAK IN MARYLAND
The Maryland Department of Health will be closely monitoring cases. You can check daily for an update
Measles cases in the United States