A lot of the medical problems were caused by infrastructure like the sewers so let's start with the word infrastructure. Infrastructure is really the basic facilities in a town or city or in a country such as transport, communications and power supplies. Enteric diseases are one which has been caused by unclean water okay enteric diseases for example typhoid cholera and diarrhea because that's just disgusting isn't it So next we have the phrase entirely preventable diseases but not easily treated so these enteric disease oh we're still on enteric diseasesOkay they're entirely preventable but not easily treatment so I wanted to look at the expressions to prevent a disease to treat something and to cure