Medical Microbiology / Biological Sciences / Humans / Microbial genetic and drug resistance / Typhoid Fever / Anti-Bacterial Agents / MDR Salmonella typhi / Ampicillin / Species Specificity / Multi Drug Resistant Cancer / Chloramphenicol / Medical / Anti-Bacterial Agents / MDR Salmonella typhi / Ampicillin / Species Specificity / Multi Drug Resistant Cancer / Chloramphenicol / Medical