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Analysis of infectious diseases in rural tropical areas
1Department of Medical Microbiology, University Hospital Leiden, P.O. Box 9600, 2300 RC Leiden, The Netherlands.
Abstract:
A study of 256 annual reports from 17 rural tropical hospitals in 4 African countries over a period of 16 years showed an absolute increase in the number of patients admitted with infectious diseases. Admissions were highest for malaria, followed by pneumonia and gastroenteritis. Admissions for immunisable diseases are decreasing in all countries. Fever remains the most important indicator of infectious diseases. Analysis of fever patients in rural tropical hospitals relies on knowledge of the epidemiology of diseases, plus expertise in physical examination. In this study, a detailed analysis of 900 fever patients indicated that 4% showed no infection, 21% of infections could be diagnosed by physical examination, 35% were diagnosed with the help of additional laboratory tests and 40% of patients were diagnosed as FUO (fever of unknown origin). 17% of FUO patients had a short, self limiting fever, but the remaining 23% were severely ill, suggesting bacterial sepsis, as was indicated by earlier studies. Undiagnosed fevers with resulting over-treatment and high resistance are costly and dangerous. These effects stress the need for better and more laboratory facilities, including possibilities for bacterial cultures. At present, patients are generally over-treated with antimalarials and antibiotics, since further diagnostic facilities are not available. Resistance is high for antimalatials ( Malaria) and for Amoxycillin, Cotrimoxazole and Gentamicin (Gram-bacteria from urine and blood).
Insights
Infectious disease admissions are rising in rural African hospitals, with malaria, pneumonia, and gastroenteritis most common. Improved diagnostics are crucial to combat rising antimicrobial resistance and over-treatment.
Area of Science:
- Tropical Medicine
- Infectious Diseases Epidemiology
- Global Health
Background:
- Rural tropical hospitals face increasing infectious disease admissions.
- Malaria, pneumonia, and gastroenteritis are leading causes of admission.
- Decreasing admissions for immunizable diseases are noted.
Purpose of the Study:
- To analyze trends in infectious disease admissions in rural African hospitals.
- To evaluate diagnostic methods for fever of unknown origin (FUO).
- To highlight the impact of diagnostic limitations on treatment and resistance.
Main Methods:
- Analysis of 256 annual reports from 17 rural hospitals across 4 African countries (16-year period).
- Detailed analysis of 900 fever patients, assessing diagnostic methods and outcomes.
- Review of antimicrobial resistance patterns.
Main Results:
- Significant absolute increase in infectious disease admissions.
- Fever of unknown origin (FUO) diagnosed in 40% of fever patients.
- 23% of FUO patients were severely ill, potentially indicating bacterial sepsis.
- High resistance observed for antimalarials and common antibiotics (Amoxycillin, Cotrimoxazole, Gentamicin).
Conclusions:
- Enhanced diagnostic facilities, including bacterial cultures, are urgently needed.
- Current diagnostic limitations lead to over-treatment and contribute to antimicrobial resistance.
- Improved diagnostics are essential for effective management of infectious diseases in resource-limited settings.