Learning Objectives and Clinical Implications
- Define enteric fever and describe its etiology, transmission, epidemiology, and risk factors, particularly infection caused by Salmonella enterica serovar Typhi and Salmonella enterica serovar Paratyphi.
- Explain the pathogenesis of enteric fever, including intestinal invasion, bacteremia, reticuloendothelial system involvement, and mechanisms leading to systemic manifestations.
- Recognize the clinical features and stages of enteric fever, including prolonged fever, abdominal symptoms, hepatosplenomegaly, and potential complications such as intestinal hemorrhage and perforation.
- Outline the diagnostic approach, including blood culture, bone marrow culture, serological tests (e.g., Widal test), and newer rapid diagnostic methods, with interpretation of results in endemic settings.
- Formulate evidence-based management plans incorporating appropriate empirical and targeted antimicrobial therapy, supportive care, and monitoring for drug resistance.
- Discuss complications such as septic shock, encephalopathy, myocarditis, and chronic carrier state, and identify indications for hospitalization and surgical referral.
- Apply principles of antimicrobial stewardship and infection control to reduce the emergence of multidrug-resistant and extensively drug-resistant strains.
- Emphasize preventive strategies including safe water and sanitation practices, vaccination, public health measures, and early recognition to reduce morbidity, mortality, and community transmission.