On Jun. 6, 2025, the South Dakota Department of Health has notified the public of potential measles exposure at two locations in Pennington County. The individual, who is South Dakota’s second confirmed measles case, visited public places while infectious.

Any person visiting the Sam’s Club (925 Eglin Street) or Dakota Premier Medical Clinic might have been exposed to measles and are advised to self-monitor for symptoms of measles for 21 days after the exposure date. Individuals who are not immune to measles should contact their healthcare provider to discuss protective options, including vaccination or immune globulin, depending on eligibility and timing.

Measles symptoms appear in two stages. In the first stage, the individual may have a runny nose, cough, and a slight fever. The eyes may become reddened and sensitive to light while the fever consistently rises each day. The second stage begins on the third to seventh day of symptoms and consists of a temperature of 103-105°F, and a red blotchy rash lasting for four to seven days. The rash usually begins on the face and then spreads down to the trunk and out to the arms and legs.

The measles vaccine offers the best protection against infection and avoids the risks that come with infection. Measles vaccine (MMR) is typically given at 12-15 months of age. The second dose of MMR is given at 4-6 years of age.

The vaccine is highly effective at preventing measles infection, and two MMR doses usually produce lifelong immunity. If you are planning to travel internationally with children, MMR vaccines can be given to children starting at six months of age.