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Cryptosporidium in 100 Australian children
K Assadamongkol1, M Gracey, D Forbes
1Department of Pediatrics, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.
Insights
Cryptosporidium parasites were detected in 1.4% of pediatric patients over 36 months. This common intestinal parasite caused diarrhea and vomiting, particularly in young Aboriginal children, highlighting hygiene concerns.
Area of Science:
- Pediatric Infectious Diseases
- Parasitology
- Public Health
Background:
- Cryptosporidium is a significant enteric pathogen in children.
- Understanding its prevalence and clinical presentation is crucial for public health interventions.
- Previous studies have indicated seasonal variations and risk factors, but data from specific pediatric populations are essential.
Purpose of the Study:
- To determine the prevalence of Cryptosporidium oocysts in pediatric patients over a 36-month period.
- To describe the clinical manifestations and demographic characteristics of infected children.
- To identify potential risk factors and seasonal trends associated with Cryptosporidium infection in a pediatric hospital setting.
Main Methods:
- Retrospective analysis of stool samples examined via fecal microscopy over 36 months.
- Collection of clinical data from diagnosed patients, including age, symptoms, and co-morbidities.
- Statistical analysis to determine prevalence, identify demographic associations, and assess seasonal patterns.
Main Results:
- Cryptosporidium oocysts were detected in 1.4% (100/6,980) of pediatric patients.
- The majority of infected children were aged 1-2 years (50%) or less than 12 months (29%).
- Diarrhea (89%), vomiting (75%), and dehydration (44%) were common symptoms; infection peaked in late summer, autumn, and early winter. A significant proportion of infected children were Australian Aboriginals (over 25%).
Conclusions:
- Cryptosporidium is a common cause of gastrointestinal illness in young children, second only to Giardia intestinalis in this hospital.
- The high prevalence in Australian Aboriginal children underscores the importance of enteric pathogens in this demographic and suggests a role for improved hygiene.
- Findings highlight the need for targeted public health strategies and improved sanitation to reduce Cryptosporidium transmission in vulnerable pediatric populations.
Abstract:
Over a consecutive 36 month period, 100 patients out of 6,980 (1.4%) from whom stool samples were examined had oocysts of Cryptosporidium detected on fecal microscopy. Three patients were receiving cytotoxic chemotherapy and adequate clinical information was available from 84 of the remainder. Fifty per cent of patients were aged 1 to 2 years, 29% were less than 12 months and the rest were more than 2 years of age. More than one-quarter of the patients were Australian Aborigines. Isolations of cryptosporidia were most prevalent in late summer, autumn and early winter. Most patients (89%) had diarrhea, more than 75% had vomiting and 44% were dehydrated, mostly to a mild degree. Other symptoms included fever (11%) and abdominal pain (11%). Ten percent of patients were apparently symptomless. Cryptosporidium sp. is the second most commonly identified intestinal parasite, after Giardia intestinalis, in fecal specimens examined in our children's hospital. The high rate of isolation in Aboriginal children emphasized the importance of enteric pathogens in this group and the role of inadequate hygiene in relation to diarrheal disease in young Aborigines.