Typhoid in North London.
D001434:Bacteriophage Typing; D002702:Chloramphenicol Resistance; D003430:Cross-Sectional Studies; D005516:Food Microbiology; D006801:Humans; D015994:Incidence; D008131:London / Q000453:epidemiology; D014435:Typhoid Fever / Q000453:epidemiology* / Q000517:prevention & control / Q000635:transmission; D014505:Urban Population / Q000706:statistics & numerical data*