On Jun. 2, 2025, the South Dakota Department of Health reported the first measles case of 2025 in a South Dakota resident. An adult in Meade County developed a measles infection after traveling internationally. The measles patient visited several public locations, and persons who were in the same settings are asked to self-monitor for measles symptoms for 21 days.

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.