HP and colorectal cancer: The pathogens that appear to be primarily involved in the pathogenesis of colorectal cancer [78] are Streptococcus bovis (S. bovis) [79], Hp [80], Bacteroides fragilis (B. fragilis) [81], Enterococcus faecalis (E. faecalis) [82], Clostridium septicum (C. septicum) [83], Fusobacterium spp.