A 36-year-old Karachi woman, Maryam Shakeel, died after contracting Naegleria, a brain-eating amoeba found in water. Health officials confirmed that low chlorine levels in the city's water supply ...

Blood in the stool can make it appear red or even black. The brighter the color of red in the poop, the lower in the intestines the bleeding occurs. Mucus can appear white or yellowish.