Jami'an lafiyar Najeriya a jihar Barno dake yankin arewa maso gabashin Najeriya sun ce suna kara kaimi don ganin sun shawo kan annobar kwalarar da ta barke a jihar, biyo bayan ambaliyar ruwan da aka samu a jihar, wanda ya raba sama da mutane miliyan biyu (2,000,000) da muhallan su.