Question

ecoli is an important part of healthy human body but some strains are pathogenic and cause diarrheal illness

Answer 1

Escherichia coli (E. coli) bacteria normally live in the intestines of people and animals.

Most E. coliare harmless and actually are an important part of a healthy human intestinal tract.

However, some E. coli are pathogenic, meaning they can cause illness, either diarrhea or illness outside of the intestinal tract.

The types of E. coli that can cause diarrhea can be transmitted through contaminated water or food, or through contact with animals or persons.

E. coli consists of a diverse group of bacteria. Pathogenic E. colistrains are categorized into pathotypes. Six pathotypes are associated with diarrhea and collectively are referred to as diarrheagenic E. coli.

STEC and other pathogenic E.coli are destroyed by thorough cooking of foods until all parts reach a temperature of 70 °C or higher. E. coli O157:H7 is the most important STEC serotype in relation to public health; however, other serotypes have frequently been involved in sporadic cases and outbreaks

• Shiga toxin-producing E. coli(STEC)—STEC may also be referred to as Verocytotoxin-producing E. coli (VTEC) or enterohemorrhagic E. coli(EHEC). This pathotype is the one most commonly heard about in the news in association with foodborne outbreaks.

• Enterptoxigenic E.coli(ETEC)

• Enteropathogenic E. coli(EPEC)

• Enteroaggregative E. coli(EAEC)

• Enteroinvasive E. coli (EIEC)

• Diffusely adherent E. coli(DAEC)