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Infection and diarrhea caused by Cryptosporidium sp. among Guatemalan infants
1Division of Nutrition and Health, Institute of Nutrition of Central America and Panama, Guatemala City.
Insights
Cryptosporidium oocyst excretion is common in Guatemalan infants, causing significant diarrhea and weight loss. Risk factors include diet, domestic animals, and poor sanitation, with malnutrition worsening illness.
Area of Science:
- Pediatric Infectious Diseases
- Public Health
- Parasitology
Background:
- Cryptosporidium infections are a significant global health concern, particularly in developing countries.
- Infant health in urban marginal areas often faces challenges due to sanitation and nutrition.
Purpose of the Study:
- To prospectively determine the prevalence of Cryptosporidium oocyst excretion in infants in Guatemala City.
- To identify risk factors associated with Cryptosporidium infection and illness in this population.
Main Methods:
- Prospective study of 130 infants (0-11 months) in Guatemala City from July 1985 to June 1986.
- Collection and examination of 1,280 stool specimens (158 during diarrhea, 1,122 during symptom-free periods).
- Analysis of potential risk factors including diet, domestic animal presence, sanitation, and nutritional status.
Main Results:
- 15.4% of infants excreted Cryptosporidium oocysts during the study period.
- 8.3% of diarrheal episodes were associated with Cryptosporidium.
- Infections peaked from February to May (end of dry season).
- Key risk factors identified: introduction of solid/liquid foods, presence of domestic animals, lack of toilet facilities, and poor nutritional status.
Conclusions:
- Cryptosporidium infections are highly prevalent among Guatemalan infants and a major cause of diarrhea and weight loss.
- Environmental and nutritional factors significantly influence infection risk and disease severity.
- Interventions addressing sanitation, animal contact, and nutritional support are crucial for prevention.
Abstract:
During July 1985 to June 1986, fecal excretion of Cryptosporidium oocysts was determined prospectively in a cohort of 130 infants, aged 0 to 11 months, living in a marginal urban area of Guatemala City, Guatemala. A total of 1,280 stool specimens were examined; 158 of them were collected during episodes of diarrhea, and 1,122 were collected during symptom-free periods, every 2 to 3 weeks, from every child. Of the children, 20 (15.4%) excreted Cryptosporidium oocysts during the observation period. Of the diarrheal episodes, 13 (8.3%) were associated with Cryptosporidium sp. Of the control specimens, seven (0.6%) were positive for oocysts. Most of the infections were documented during the months of February to May, at the end of the dry season. Cryptosporidium infections are very common among Guatemalan infants and are an important cause of diarrhea and weight loss. The introduction of liquid or solid foods in the diets of the children, the presence of domestic animals (dogs, cats, or poultry), and the absence of toilet facilities in the house seem to be important risk factors for infection; also, deficient nutritional status may predispose the infected child to Cryptosporidium-associated illness.