enterohemorrhagic Escherichia coli infection

Enteroinvasive Escherichia coli infection is an intestinal infectious disease caused by enterohemorrhagic Escherichia coli (EHEC). EHEC is the pathogen of hemorrhagic enteritis, mainly Escherichia coli O157:H7, a diarrheagenic Escherichia coli newly discovered in 1982. In addition, O26:H11 may also be one of the pathogens. There have been no official reports in China so far. Poultry and livestock are the reservoir hosts and main sources of infection. The population is generally susceptible, but the elderly and children are mainly affected. It has an obvious seasonality, with the epidemic peak in July, August, and September. The typical manifestation is acute onset, diarrhea, initially watery stools, followed by bloody stools. It is accompanied by crampy abdominal pain, no fever or low-grade fever, and may be accompanied by nausea, vomiting, and upper respiratory infection-like symptoms. In cases without complications, natural recovery occurs within 7 to 10 days. A small number of patients have a disease course of 1 to 2 weeks. Although the mortality rate is not high, the disease still poses certain risks, so it should be taken seriously.