The prevalence of intestinal parasites in paediatric diarrhoeal and non-diarrhoeal patients in Addis Ababa hospitals, with special emphasis on opportunistic parasitic infections and with insight into the demographic and socio-economic factor

Abstract

Abstract
Background: Opportunistic intestinal parasitic infections cause severe diarrhoea specially in infants and in immunocompromised
people world wide.
Objective: The objective of this study was to assess and determine the prevalence of opportunistic intestinal parasites
in paediatric patients with and without diarrhoea in selected hospitals in Addis Ababa.
Methods: A cross-sectional study was conducted on 222 children under five years of age who had diarrhoea and on 74
children who had no diarrhoea in selected Hospitals in Addis Ababa. Single stool specimens were collected and
screened for intestinal parasitic infections by using direct and concentrated methods. The Modified Ziehl-Neelsen
Staining and Modified Water-Ether Sendimentaion methods were used for detecting Coccidial parasites.
Results: Of the 222 paediatric diarrhoeal patients, 61(27.5%) were found to be infected with a variety of intestinal
parasites and out of 74 children without diarrhoea 11(14.9%) were found to be infected. Among the emerging
opportunistic parasites detected in diarrhoeal children were Cryptosporidium parvum (8.1%), Isospora belli (2.3%)
and Enterocytozoon bieneusi/ Encephalitozoon intestinalis (0.5%). Other common intestinal parasites detected were
Ascaris lumbricoides (0.5%), Trichuris trichiura (0.9%), Giardia lamblia (6.3%), Entamoeba histolytica/ E. dispar
(1.4%), Blastocystis hominis (5.9%) and Hymnolepis nana (0.5%). Opportunistic parasites were found to be
significantly associated with diarrhoeal and non-breastfed children (p<0.001). C. parvum and I. belli respectively were
isolated from 83.3% and 80% of diarrhoeal children aged less than 12 months. C. paravum and I. belli infections were
also higher in male children, with a prevalence of 72.2% for C. paravum and 80% for I. belli.
Conclusion: This study re-affirms and confirms the previously held view that opportunistic parasites can cause
diarrhoea in paediatric patients and that it is more prevalent in male, non-breastfed children. The cause of diarrhoea in
paediatrics in the absence of identifiable parasitic infections suggests that other infectious agents might be responsible
for the diarrhoea. [Ethiop.J.Health Dev. 2005;20(1):39-46]