The detection of enteric carriers in towns by means of sewage examination.
D004777:Environment; D006801:Humans; D010284:Paratyphoid Fever; D012722:Sewage; D012931:Social Environment; D014435:Typhoid Fever; D014436:Typhoid-Paratyphoid Vaccines
D012722:Sewage; D014436:Typhoid-Paratyphoid Vaccines
PARATYPHOID; SEWAGE; TYPHOID