Gastrointestinal Pathogens

        Bacteria
                - Clostridium difficule
                - Escherichia coli
                - Salmonella
                        - enterica, typhi
                - Shigella flexneri
                - Enterococcus
                        - faecalis, faecium
                - Enterobacteriaceae
                - Bacteroides fragilis
                - Pseudomonas aeruginosa
                - Vibrio cholerae
        
        Viruses
                - Calicivirus, rotavirus,
                  Norwalk virus, Dengue fever virus
        
        Protozoa
                - Cryptosporidium
                        - hominis, parvum
                - Toxoplasma gondii
                - Campylobacter jejuni
                - Enterocytozoon bieneusii