| [outbreak of paratyphoid fever among peruvian naval personnel]. | a retrospective epidemiological study was conducted in connection with an outbreak of paratyphoid fever at a peruvian naval installation in callao. the study sought to determine the magnitude of the outbreak, the source of infection, the attack rates, the persistence of bacilli excretion, and the clinical picture of the disease. the source of salmonella paratyphi b infection had been a meal of chicken and rice served to around 400 members of the naval police. over a period of three weeks, 21 per ... | 1992 | 1610504 |