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Cryptosporidium parvum in children with diarrhea in Zulia State, Venezuela
L Chacin-Bonilla1, M C Bonilla, L Soto-Torres
1Instituto de Investigaciones Clinicas, Universidad del Zulia, Maracaibo, Venezuela.
Insights
Cryptosporidium parvum is endemic in young children in Zulia State, Venezuela. While it can cause diarrhea, this study found it responsible for a small fraction of pediatric diarrheal episodes.
Area of Science:
- Medical Parasitology
- Pediatric Infectious Diseases
- Public Health Epidemiology
Background:
- Cryptosporidium parvum is a significant cause of diarrheal illness globally.
- Assessing its role in pediatric populations in specific regions is crucial for understanding disease burden.
Purpose of the Study:
- To determine the prevalence and significance of Cryptosporidium parvum infections in children under 60 months with acute diarrhea in Zulia State, Venezuela.
- To differentiate between C. parvum as a sole pathogen versus a co-infecting agent in diarrheal cases.
Main Methods:
- A case-control study involving 310 children with acute diarrhea and 150 asymptomatic controls.
- Stool specimen analysis for Cryptosporidium parvum oocyst detection using microscopy.
- Identification of other co-pathogenic parasites in positive cases.
Main Results:
- Cryptosporidium parvum oocysts were detected in 11.2% of children with diarrhea and 6% of controls.
- C. parvum was the sole identified pathogen in only 34.2% of infected diarrheal cases.
- Co-infection with other parasites was common (65%) among children shedding C. parvum oocysts.
Conclusions:
- Cryptosporidium parvum exhibits high endemicity in the pediatric population of Zulia State.
- While a relevant pathogen, C. parvum likely accounts for a minor proportion of acute diarrheal episodes in this cohort.
- Co-infections are frequent, highlighting the complexity of diagnosing pediatric diarrhea.
Abstract:
The prevalence and importance of Cryptosporidium parvum as a causal agent of acute diarrhea among pediatric patients from Zulia State, Venezuela was assessed. Single stool specimens were collected from 310 children 0-60 months of age with acute diarrheal disease who were admitted to three public hospitals and from 150 comparable control children without gastrointestinal symptoms who were seen as outpatients. Cryptosporidium parvum oocysts were identified in 35 (11.2%) of 310 children with diarrhea and the coccidium was the single detectable pathogen in only 12 (34.2%). Other potential pathogenic parasites were present in most of the patients shedding oocysts (23 of 35, 65%). In nondiarrheal control children, oocysts were identified in nine (6%) of 150. The data suggest that C. parvum is relatively highly endemic in children 0-60 months of age in Zulia State and that although C. parvum may be an important pathogen associated with diarrhea, it may be a cause of only a small proportion of diarrheal episodes.