A mysterious illness in the Democratic Republic of Congo, initially feared to be “Disease X,” has likely been identified as malaria. The WHO reported that ten out of twelve samples from affected individuals tested positive for the mosquito-borne disease. A mysterious illness in the Democratic Republic of Congo, initially feared to be “Disease X,” has likely been identified as malaria. The WHO reported that ten out of twelve samples from affected individuals tested positive for the mosquito-borne disease. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle