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Cryptosporidiosis in children in Idukki District in southern India
Insights
Cryptosporidium oocysts are common in southern Indian children, affecting 6% of those with diarrhea and 3% of healthy children. This indicates a significant prevalence of Cryptosporidium infection and asymptomatic carriers in the region.
Area of Science:
- Medical Microbiology
- Infectious Diseases
- Pediatrics
Background:
- Cryptosporidium is a significant cause of diarrheal illness globally.
- Prevalence data in southern India, particularly among children, is limited.
Purpose of the Study:
- To determine the prevalence of Cryptosporidium oocysts in children in Idukki District, southern India.
- To investigate the association between Cryptosporidium infection and diarrhea in this pediatric population.
Main Methods:
- Microscopic examination of concentrated stool samples from 560 children (aged 2 weeks to 10 years).
- Stool samples were analyzed using phenol-auramin stain with fluorescent microscopy and modified Ziehl-Neelsen stain with light microscopy.
- Samples were collected from children with and without diarrhea, including age-matched controls.
Main Results:
- Cryptosporidium oocysts were detected in 4.5% of all stool samples examined.
- Infection prevalence was higher in children with diarrhea (6%) compared to healthy controls (3%).
- The study identified a notable frequency of asymptomatic Cryptosporidium cyst-passers.
Conclusions:
- Cryptosporidium infection is prevalent among children experiencing diarrhea in southern India.
- Asymptomatic carriage of Cryptosporidium oocysts is common in this population, suggesting potential for transmission.
- Further research and public health interventions may be warranted to address Cryptosporidium burden in the region.
Abstract:
Concentrated stool samples from 560 children, aged from two weeks to 10 years, from Idukki District, southern India, were examined to detect Cryptosporidium oocysts, using a phenol-auramin stain and fluorescent microscopy. Smears of stool samples were also stained by a modified Ziehl-Neelsen method and were examined by light-microscopy. One sample was collected from each of 266 children with diarrhoea and 294 age-matched children without diarrhoea. Cryptosporidium oocysts were detected in 4.5% of all stools, in 6% of diarrhoeal stools and in 3% of stools from healthy controls. Results of the study show that Cryptosporidium infection is common in children with diarrhoea in southern India, and there is also a high frequency of asymptomatic cyst-passers in this area.
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