Childhood enteritis caused by E. coli can be divided into enterotoxigenic E. coli enteritis, enteroinvasive E. coli enteritis, hemorrhagic E. coli enteritis, and adherent E. coli enteritis. The specific clinical manifestations are as follows:
1. Enterotoxigenic E. coli enteritis
The incubation period is 1-2 days, with a relatively acute onset. Clinical manifestations are similar to cholera, with generally no fever or low fever, diarrhea is mostly watery, with a large amount and a foul smell. Under microscopic examination, no white blood cells and red blood cells are found, and there is often moderate to severe isotonic or hypotonic dehydration. It is a self-limiting disease with a course of 4-7 days.
2. Enteroinvasive E. coli enteritis
The incubation period is 18-24 hours, with an acute onset, frequent diarrhea, sticky and jelly-like stools with pus and blood, often accompanied by nausea, vomiting, high fever, abdominal pain, and urgent need to defecate. Severe symptoms of poisoning and even shock may occur.
3. Hemorrhagic Escherichia coli enteritis
Increased frequency of stools, starting with yellow watery stools, then turning into bloody water stools, with a special smell, stool microscopy shows a large number of red blood cells, usually without white blood cells. Accompanied by abdominal pain, some cases may be accompanied by hemolytic uremic syndrome and thrombocytopenic purpura.
4. Adhesive Escherichia coli enteritis
Common in infants and young children, fever, diarrhea, and yellowish water-like stools.