Infectious gastrointestinal illnesses cause significant morbidity, mortality and socioeconomic burden world wide. Salmonella, G. lamblia and E. histolytica are the most common etiological agents of human diarrhoeal diseases worldwide, and leads to significant morbidity and mortality in developing countries. It is estimated that up to two hundred million people are chronically infected with G. lamblia globally, and 500,000 new cases are reported annually. The prevalence of the disease varies from 2% -5% in developed to 20% -30% in developing countries. Amebiasis is also one of the worlds most...