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Acute viral hepatitis: aetiology and evolution
Insights
Hepatitis A is the most common acute hepatitis in children, with most recovering fully. While Hepatitis B and non-A, non-B hepatitis are less common, they carry a higher risk of severe outcomes and mortality.
Area of Science:
- Pediatrics
- Infectious Diseases
- Hepatology
Background:
- Acute hepatitis in children presents a significant public health challenge.
- Understanding the etiological agents and outcomes is crucial for effective management.
- Hepatitis A, B, and non-A, non-B viruses are primary concerns in pediatric hepatitis.
Purpose of the Study:
- To investigate the prevalence and etiological spectrum of acute hepatitis in a pediatric cohort.
- To analyze the clinical outcomes and recovery rates associated with different hepatitis types.
- To assess the course of Hepatitis B infection, including antigen clearance and antibody development.
Main Methods:
- A prospective study of 348 consecutive children diagnosed with acute hepatitis over 3.5 years.
- Categorization of hepatitis based on etiological testing (Hepatitis A, B, non-A, non-B).
- Monitoring of clinical recovery, mortality, and Hepatitis B surface antigen clearance.
Main Results:
- Hepatitis A was the predominant cause (81%), particularly in younger children.
- Hepatitis B accounted for 8% and non-A, non-B for 10% of cases.
- Recovery rates were high for Hepatitis A and B, but three deaths occurred from fulminant hepatitis (one B, two non-A, non-B).
- Hepatitis B surface antigen was cleared rapidly in most cases, with high antibody seroconversion.
- One child became a Hepatitis B carrier.
Conclusions:
- Hepatitis A is the most frequent cause of acute hepatitis in children, generally associated with a favorable prognosis.
- While less common, Hepatitis B and non-A, non-B hepatitis pose a greater risk of severe disease and mortality.
- Prompt clearance of Hepatitis B surface antigen and development of antibodies are typical, though carrier state is possible.
Abstract:
Over a period of three and a half years, 348 consecutive children with acute hepatitis were studied. There were 205 boys and 143 girls aged from 3 months to 12 years old. The most common type was hepatitis A, of which there were 281 cases, 81% of the total; there were 41 in the under 4 years old age group (63% of that group), 99 in the 5-8 year old age group (87% of that group) and 141 in the 8-12 year old age group (83% of that group). Hepatitis B occurred in 29 (8% of the total), and non-A, non-B hepatitis occurred in 35 (10%). All the children with hepatitis A and all but one with hepatitis B recovered. There were three deaths from fulminant hepatitis, one in the group with hepatitis B and two with non-A, non-B. Clearance of the hepatitis B surface antigen was fast, by six months 26 patients having cleared the antigen and 21 (77%) being positive for hepatitis B surface antibody. One patient became a carrier of hepatitis B surface antigen.