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Published on: September 14, 2019
Seven years' experience with Cryptosporidium parvum in Guinea-Bissau, West Africa
M Perch1, M Sodemann, M S Jakobsen
1Department of Epidemiology Research, Danish Epidemiology Science Centre, Statens Serum Institut, Denmark. perch@dadlnet.dk
Insights
Cryptosporidium parvum is a common cause of diarrhea in young children in Guinea-Bissau. This parasitic infection peaks before the rainy season, unlike other common enteric parasites.
Area of Science:
- Pediatrics
- Infectious Diseases
- Public Health
Background:
- Enteric parasites are a significant cause of diarrheal disease in children globally.
- Understanding the prevalence and seasonality of specific parasites is crucial for effective public health interventions.
Purpose of the Study:
- To determine the prevalence and identify risk factors for enteric parasitic infections in young children in Guinea-Bissau.
- To investigate the seasonality of Cryptosporidium parvum and compare it with other common enteric parasites.
Main Methods:
- Community-based study conducted in Guinea-Bissau from 1991 to 1997.
- Stool specimens from children under 5 years with diarrhea were examined for enteric parasites.
- Prevalence data were analyzed by age and season.
Main Results:
- Cryptosporidium parvum was the second most common parasite (7.7%), after Giardia lamblia (14.8%).
- Highest Cryptosporidium parvum prevalence was observed in infants aged 6-11 months.
- Cryptosporidiosis exhibited distinct seasonality, peaking from May to July, preceding the rainy season.
Conclusions:
- Cryptosporidium parvum is a significant enteric pathogen in children with diarrhea in Guinea-Bissau.
- Unlike Giardia lamblia and Entamoeba histolytica, Cryptosporidium parvum shows marked seasonal variation.
- Findings highlight the need for targeted interventions against cryptosporidiosis, especially during peak transmission periods.
Abstract:
In community-based studies conducted from 1991 to 1997 in Guinea-Bissau, West Africa, stool specimens from children aged less than 5 years with diarrhoea were routinely examined for enteric parasites. Cryptosporidium parvum, found in 7.7% of 4,922 samples, was the second most common parasite, exceeded only by Giardia lamblia which was found in 14.8% of the samples. The highest prevalence of cryptosporidium was found in children aged 6-11 months, whereas the prevalence of other enteric parasites increased with age. Cryptosporidiosis showed a marked seasonal variation, with peak prevalences found consistently at the beginning of or just before the rainy seasons, May through July. By contrast, no seasonality was found for the enteric parasites Giardia lamblia or Entamoeba histolytica. We conclude that Cryptosporidium parvum is an important pathogen in children with diarrhoea.
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