The cases in Florida's Gulf coast county of Pinellas are the first there in 10 years.
The U.S. Centers for Disease Control said Wednesday that from January 1 to July 14, 107 people had contracted the disease. This year, the number of measles cases in the United States is expected to surpass that number.
While vaccinations have kept measles to low levels in the USA, it's still common in many parts of the world and the CDC says people who have it keep traveling to the U.S. This year's outbreak is on pace to surpass last year's cases, when 118 people from 15 states and the District of Columbia were reported to have measles. According to a CDC report, almost all those cases lacked immunizations, and the incorrect perception that the measles-mumps-rubella vaccine was linked to autism had contributed to the low level of vaccinations in the affected communities.
The Centers for Disease Control and Prevention says it's monitoring an outbreak in 21 states, including Pennsylvania.
Officials urged parents to vaccinate their children.
The one case reported from Maryland involved someone from the D.C. area, according to a spokeswoman from the Maryland Department of Health. The Florida Department of Health said Wednesday the two individuals live in the same household and also weren't immunized. The ages of those patients were not available, Hall said.
Measles is an airborne virus that spreads through coughing and sneezing. Some symptoms are a high fever, cough, runny nose and red eyes, followed by a rash that typically starts on the face and spreads to the rest of the body.