During water analysis in a hostel, amoebic cysts were seen. The best step to manage it is ?

Ans. is "a' i.e., Iodine "Amoebic injection is spread by ingestion ref food or water contaminated with cysts. since an asymptomatic carrier may excrete upto 15 million cysts/day. Prevention of infection requires adequate sanitation and eradication of cyst carriage. In high risk areas infection can he minimized by avoidance of unpeeled fruits and the use of Bottled water o Because cysts are resistant to readily attainable levels of chlorine, disinfection by iodination (Tetraglycine hyperiodide) is recomtnended." - Harrison