The symbol is also an Ancient Egyptian hieroglyph which represents the hieroglyph Â´nh (ankh) meaning life or breath of life. The glyph appears in an incredible number of inscriptions and was often used as a decorative device.
Some of the common summer viruses-- in particular the enteroviruses that can cause diarrhea and the well known hand-foot-mouth disease-- are easily acquired from other children who swim in the same pool. Drinking too much pool water can also cause diarrhea because of the chlorine. Although swallowing some pool water is inevitable, teaching a child proper technique in the water may save you from having to deal with this intestinal complaint.
Chlorine poses the greatest potential for harm to human health through acute exposure. Å Chlorine is an extremely corrosive gas. It will burn skin, eyes, nose, throat, lungs, and even teeth at doses as low as 15 parts per million (ppm). Å At doses of 25 ppm, chlorine may burn the lungs, cause fluid buildup (pulmonary edema), and result in death.