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Evaluation of a clinical case definition of AIDS in African children
R I Colebunders1, A Greenberg, P Nguyen-Dinh
1Project SIDA, Department of Public Health, Kinshasa, Zaire.
Insights
The World Health Organization's (WHO) clinical case definition for pediatric AIDS in Africa showed low sensitivity and limited utility for HIV surveillance in children. The definition was less effective in identifying pediatric AIDS cases compared to adults.
Area of Science:
- Pediatric Infectious Diseases
- Epidemiological Surveillance
- Global Health
Background:
- The World Health Organization (WHO) developed a provisional clinical case definition for Acquired Immunodeficiency Syndrome (AIDS) in children for surveillance in Africa.
- Accurate case definitions are crucial for effective disease surveillance and resource allocation in public health.
Purpose of the Study:
- To evaluate the sensitivity, specificity, and positive predictive value of the WHO's provisional clinical case definition for pediatric AIDS.
- To assess the utility of this definition for human immunodeficiency virus (HIV) surveillance in children in Kinshasa, Zaire.
Main Methods:
- A provisional clinical case definition for pediatric AIDS was applied to 159 hospitalized children in Kinshasa, Zaire.
- Human immunodeficiency virus (HIV) seropositivity was determined for all participating children.
- Statistical analysis was performed to calculate specificity, sensitivity, and positive predictive value.
Main Results:
- Twenty-one (13%) of the 159 children were seropositive for HIV.
- The WHO clinical case definition demonstrated a specificity of 87% but a low sensitivity of 35%.
- The positive predictive value for HIV seropositivity was found to be 25%.
Conclusions:
- The clinical case definition for pediatric AIDS is less sensitive than specific, indicating a significant number of false negatives.
- Diagnosing AIDS clinically in children presents greater challenges than in adults.
- The proposed WHO clinical case definition has limited utility for effective pediatric AIDS surveillance in Africa.
Abstract:
In July 1986, a provisional clinical case definition of AIDS in children, developed by the World Health Organization (WHO) for surveillance purposes in Africa, was tested on 159 patients hospitalized in the Department of Pediatrics at Mama Yemo Hospital, Kinshasa, Zaire. Twenty-one (13%) of these children were seropositive for HIV. In this population, the clinical case definition of pediatric AIDS was found to be fairly specific (87%) but lacked sensitivity (35%). The positive predictive value for HIV seropositivity was 25%. This study suggests that it is more difficult to define AIDS clinically in children than in adults and that the utility of the proposed WHO clinical case definition for pediatric AIDS for surveillance of children's AIDS in Africa is limited.