SIOUX FALLS, S.D. (AP) — South Dakota health officials are asking vaccine providers to put Johnson & Johnson’s COVID-19 shots on hold after a request from federal officials. The Centers for Disease Control and Prevention and the Food and Drug Administration asked for a pause Tuesday following reports of blood clots developing in six people in the U.S. who had received the vaccine. Federal authorities said all six cases occurred among women between the ages of 18 and 48, and symptoms occurred six to 13 days after vaccination. Officials say South Dakota has administered nearly 16,000 doses of the J&J vaccine, with no adverse cases reported.