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[Cryptosporidia associated gastroenteritis: epidemiologic study of children in Tyrol and Vorarlberg]
W Lederer1, F Allerberger, M P Dierich
1Institut für Hygiene, Universität Innsbruck.
Insights
Routine testing for Cryptosporidium parvum in immunocompetent children with diarrhea is not recommended in Western Austria during winter. The infection is typically self-limiting, with low detection rates in both sick and healthy children.
Area of Science:
- Medical Microbiology
- Pediatric Infectious Diseases
- Parasitology
Context:
- Study conducted in Western Austria (Tyrol and Vorarlberg) during the cold season of 1996.
- Area does not use surface water for drinking water production, minimizing a common transmission route.
- Involves stool sample analysis from children and calves.
Purpose:
- To investigate the prevalence of Cryptosporidium parvum in young children with diarrhea.
- To assess the necessity of routine diagnostic testing for this pathogen in a specific demographic and season.
- To compare prevalence in symptomatic children versus a control group and in calves.
Summary:
- Direct immunofluorescence technique used on 523 stool samples from children (3 months-6 years).
- Cryptosporidium parvum detected in 1.4% of diarrheal cases and 0.4% of controls.
- Oocysts found in 4.0% of examined calf stool samples.
Impact:
- Findings suggest routine Cryptosporidium parvum screening is unnecessary for immunocompetent children with diarrhea in Western Austria during winter.
- Highlights the self-limiting nature of the infection in this population.
- Provides epidemiological data on Cryptosporidium parvum in children and calves in the region.
Abstract:
Stool samples from 523 children aged between 3 months and 6 years were examined for Cryptosporidium parvum by means of the direct immunofluorescence technique in March 1996. The specimens were sent to the Federal Public Health Laboratory in Innsbruck from general practitioners and pediatricians and from hospitals in Tyrol and Vorarlberg. The study was performed during the cold season in an area that does not employ surface water for the production of drinking water. Oocysts of cryptosporidia were detected as the sole agent in 4 out of 294 samples (1.4%) taken from children suffering from diarrheal disease, as well as in 1 out of 229 samples (0.4%) of children in the control group. Duration of diarrheal disease varied from 2 days to 4 weeks. In addition, a 75 stool samples from Tyrolean calves were examined for cryptosporidia. Oocysts were detected in 3 out of 75 stool samples (4.0%). Routine examinations for Cryptosporidium parvum in stool specimens of immunocompetent children with diarrhea do not seem to be necessary in Western Austria during the cold season due to the self-limiting course of the infection.