Show fly Is paralysis carrier discovery that common flies carry the virus of infantile paralysis has been made by drs john L paul and james D trask at yale yala university medical school it is now evident that poliomyelitis infantile paralysis which cri cripples P pies persons and kills from to 1000 every year is a disease of the intestinal tract as wen well as the spinal cord and that flies may carry the virus from sewage the discovery of drs paul and trask makes the common house fly more than ever an enemy to health and even to life itself especially among children |