I am an Microbiology undergraduate about to begin my final year research project. Since i am aware that Rotavirus is responsible for some cases of gastroenteritis in children, i have chosen to work on the prevalence and detection of Rotavirus in Oreochromis niloticus in a particular river in Nigeria using ELISA. Please, i need suggestions on the appropriate type sample(s) to be obtained from the fish (although, i have it in mind to use the gastrointestinal tract), preservation of samples, and also publications related to this research topic. Thank you.