Schistosoma haematobium Egg Excretion does not Increase after Exercise: Implications for Diagnostic Testing

Children are frequently invited to exercise before micturition, as it is believed that this activity will result in higher egg excretion, and hence, increases sensitivity of microscopic diagnoses. However, the evidence of this recommendation is scant. In the study presented here, 257 children, aged...

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Bibliographic Details
Published in:The American journal of tropical medicine and hygiene 2018-01, Vol.98 (3), p.772-775
Main Authors: Coulibaly, Jean T, Andrews, Jason R, Lo, Nathan C, N'Goran, Eliézer K, Utzinger, Jürg, Keiser, Jennifer, Bogoch, Isaac I
Format: Article
Language:English
Subjects:
Adolescent
Animals
Child
Child, Preschool
Cote d'Ivoire - epidemiology
Cross-Sectional Studies
Diagnostic Tests, Routine - methods
Eggs
Exercise
Female
Humans
Male
Microscopy
Parasite Egg Count - methods
Rural Population
Schistosoma haematobium - isolation & purification
Schistosomiasis haematobia - diagnosis
Schistosomiasis haematobia - epidemiology
Schistosomiasis haematobia - parasitology
Schistosomiasis haematobia - urine
Urination - physiology
Urine
Zygote - cytology
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Summary:Children are frequently invited to exercise before micturition, as it is believed that this activity will result in higher egg excretion, and hence, increases sensitivity of microscopic diagnoses. However, the evidence of this recommendation is scant. In the study presented here, 257 children, aged 2-15 years from south Côte d'Ivoire, provided urine samples for microscopy on consecutive days; one sample without prior exercise and one sample after exercise. Comparing the same individuals without and with prior exercise, sample positivity for (25.7% versus 23.0%, = 0.31) and mean egg counts (10.2 eggs/10 mL versus 8.5 eggs/10 mL, = 0.45) did not differ. Exercise before urine collection does not appear to increase egg excretion.
ISSN:0002-9637
1476-1645
DOI:10.4269/ajtmh.17-0728