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(MEADE COUNTY, SD) — South Dakota has reported its first case of measles this year. The state is now the 33rd in the country to confirm a measles case, with at least 1,088 cases reported nationally so far this year.
An adult who recently traveled outside the country tested positive for measles in Meade County, South Dakota, according to the South Dakota Department of Health.
It comes as federal officials are urging all Americans to get vaccinated against measles before traveling abroad, according to guidance updated last week from the Centers for Disease Control and Prevention (CDC). Previously, the guidance stated that those traveling to countries with an ongoing outbreak should be vaccinated before leaving.
The measles, mumps, and rubella (MMR) vaccine is part of the routine immunization schedule and has been shown to be up to 97% effective after two doses, the CDC says. Adults without immunity through vaccination or infection should also get vaccinated, the agency notes.
At least 62 people in the U.S. were infected with measles while traveling on an airplane this year, a CDC spokesperson told ABC News in part of a statement. “There has been only one situation during this period in which measles appeared to have been transmitted during air travel, ” the spokesperson added.
In South Dakota, the person infected with measles visited two medical centers where others may have been exposed to the virus.
The Department of Health says anyone who was at the Rapid City Medical Center Urgent Care waiting room on May 28 between 7:15 a.m. and 10 a.m., or at Monument Health Sturgis Urgent Care waiting room on May 29 between 9:45 a.m. and 3 p.m., should watch for signs of illness.
Health officials explain that the early signs of measles appear in two stages. In the first stage, symptoms include a runny nose, cough and slight fever. The eyes may become red and sensitive to light while the fever rises each day. The second stage begins between three and seven days after symptoms start, with temperatures reaching 103 to 105 degrees Fahrenheit and a red blotchy rash that lasts between four to seven days. The rash typically starts on the face before spreading to the shoulders, arms and legs.
“Measles is a highly contagious viral disease and spreads through the air from an infected person,” Dr. Joshua Clayton, state epidemiologist, told ABC News. “Individuals who lack immunity from vaccination or past infection are at high risk of measles infection if they have contact with an infected person.”
According to state health officials, the measles vaccine offers the best protection against infection. People are considered immune to measles if they were born before 1957, received one dose of the measles vaccine (MMR) as an adult, received two doses of the measles vaccine (MMR) as a child or high-risk adult, have measles antibodies shown by a lab test, or had a previous measles infection confirmed by a lab test.
The Department of Health notes that the MMR vaccine is typically given at 12 to 15 months of age, with a second dose at four to six years. For international travel with children, MMR vaccines can be given starting at 6 months of age.
Learn more about measles on the Department of Health website, where information includes fact sheets, frequently asked questions, and a webinar for healthcare providers.
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