RESUMO
In giardiasis symptomatic group (I) the prevalence of diarrhoea was 5/7 (71.43%), 13/13 (100%) in Grade 0, I, II, III and IV pathology respectively which is statistically insignificant in comparison to each other (P > 0.05). The prevalence of abdominal pain is 71.43%, 73.33%, 95%, 91.67% and 100% in Grade 0, I, II, I & IV pathology respectively which is statistically insignificant to each other (P > 0.05). The prevalence of flatulence is 42.86%, 40%, 80%, 83.33% and 100% in Grade 0, I, II, III & IV pathology respectively, was statistically significant in comparison to each other (P < or = 0.05) So, the prevalence of flatulence is more frequent in patients with marked pathological changes in the duodenum. The prevalence of anorexia was 14.29%, 53.33%, 65%, 50% & 100% in Grade 0, I, II, III & IV pathology respectively, statistically significant in comparison to each other (P < or = 0.05). The prevalence of vomiting was 0%, 13.33%, 15%, 16.67 & 85.71% in Grade 0, I, II, III and IV pathology respectively, significant increased in Grade IV and absent in Grade 0 (P < or = 0.001).
