Some important infectious diseases such as cholera, diarrhoea, typhoid and dysentery are transmitted by faecal contamination of water and food. These form of disease declined rapidly with the introduction of public hygiene measures for proper disposal of sewage and purification of water in the developed countries unlike in the developing countries

Yes, the developing countries especially the under developped are still experiences such disease relating to improper health care.. More campaigns should be sent to them, one doesnt have to be wealthy to get good health.