Support WBURWhat we do — and don't yet — know about the malaria cases in the U.S.Play03:25Download AudioBec RoldanJune 30, 2023 ShareEven though the U.S. said it eliminated malaria in 1951, efforts have continued to keep the disease at bay. Above: A Stearman biplane sprays insecticide during malaria control operations in Savannah, Ga., in 1973. (Getty Images)