Salmonella in the Caribbean
Case study based on real-life investigations undertaken in Trinidad and Tobago in 1998-1999 and published in Clinical Infectious Diseases and the West Indian Medical Journal. Focus on laboratory-based surveillance of Salmonella in Trinidad and Tobago in 1998-1999, leading to a case-control study of risk factors for salmonellosis, and to control measures.
Target audience: Public health practitioners with knowledge of basic epidemiologic concepts, especially non-epidemiologists (e.g., laboratorians, environmental health specialists, sanitarians, public health nurses, veterinarians, MPH students)
Level of case study: Basic
Teaching materials required: Graph paper, calculator
Time required: 3-4 hours
- Describe the signs and symptoms, means of diagnosis, and control of salmonellosis;
- Describe how Salmonella serotyping can be used in public health practice;
- Given a disease, describe the desired characteristics of a surveillance system for that disease;
- Discuss how the inclusion of the laboratory in the surveillance of a disease impacts the characteristics of the surveillance system and the usefulness of the data;
- Calculate the incidence of a disease if given the number of cases and population size;
- Characterize a health problem by time, place, and person (e.g., perform the descriptive epidemiology); and
- Create and interpret a graph; Interpret the measure of association for a case-control study.