Generally E. coli are not pathogenic but it has some E. coli can be infection because it can absorb toxin gene, it causes the disease in humans in 1947, was outbreak of E. coli in England. Also there was an outbreak in Japan and the US too. A group of E. coli bacteria that cause the infection into five groups follow types of toxin as,
1. Enterotoxingenic E. coli (ETEC)
2. Enteroinvasive E. coli (EIEC)
3. Enterohemorrhagic E. coli (EHEC)
4. Enterotoxingenic E. coli (ETEC)
5. Enteroaggregative E. coli (EaggEC)