An American doctor is among the newly confirmed cases in an outbreak in Congo of a rare variant of the Ebola virus with no approved vaccines or therapeutics, a Congolese official said Monday, as deaths have surpassed 100 in two provinces and details emerged about the government’s delayed response to the outbreak. Dr. Jean-Jacques Muyembe, medical director of the Congolese National Institute of Bio-Medical Research, told The Associated Press the doctor is among the cases in Bunia, capital of Ituri province.