145.Amoebiasis is prevented by (a) eating balanced food (b) eating plenty of fruits (c) drinking boiled water (d) using mosquito nets.
Option C Amoebiasis can be prevented by drinking boiled water as it mainly occurs by ingestion of cysts of E. histolytica in food or drinks. The contamination of food or drinks occurs by (i) unhygienic habits of food handlers who by habit scratch the anus and then put the fingers in the food which they serve, (ii) habit of defecating in open fields causing contamination of vegetables and then washing the bottom in ponds causing the contamination of water, (iii) transmission of cysts from stools to food and drinks by flies and cockroaches. So, one should take following preventive measures : (I) Proper sanitation of roads, streets, lanes and open drains. (II) Purification of drinking water (by boiling). (III) Proper disposal of sewage. (IV) Covering of the food articles by the traders (V) Chemical treatment of huma faeces to be used as fertilizer.
