Diarrhoea is a sign of some microbial, infectious and parasitic species causing diseases, which are mostly transmitted by infected facial water. Where there is a lack of proper hygienic practices and safe access to drinking water, cooking, and washing, contamination is more likely. Norovirus and Shigella are also the two most prevalent human pathogens in lowlands with mild to extreme diarrhea. Other infections can be essential as well, such as cryptosporidium and campylobacter organisms. There is also a need to understand destination etiological trends.