Abstract
Giardiasis  is  one of  commonest  intestinal  protozoa causing  diarrheal  worldwide  especially in daycare centers.  The present study  aimed to detect prevalence of  G. lamblia  and its  risk factors among 
children  by  using  stained  microscopic  smears  and  immunochromatographic  test.  A  cross-sectional 
study was carried out among 100  children  (4  to 15 years)  suffered from  diarrhea  at  Pediatric Outpatient Clinics, Aswan University Hospitals. Sheet was filled out one each child or his parents as to name, 
sex, age, and previous history of giardiasis. All samples were examined by ICT, and microscopy
The  results  showed  that  the  prevalence  of  giardiasis  among  children  was  49%,  &  41%  by  using 
stained microscopic  examination and rapid ICT (Epituub USA) respectively. Sensitivity and specificity of rapid test were (77.6%  & 94.1%) respectively without  cross-reactivity with other  parasites, with
potentially useful rapid test in absence of unqualified lab technician or in epidemiologic surveys. Giardiasis is more prevalent in rural areas’ children than in urban ones. 
Key words: Children, Giardiasis, Diagnosis Microscopy, Immunochromatographic tes