Escherichia coli infection

When it comes to E. coli infection, I believe everyone is familiar with it. This is a common bacteria that causes diarrhea in people. It is mainly caused by infection with this bacteria, which causes intestinal flora disorder and leads to diarrhea. It is more common in children with poor resistance. If you don't pay attention to hygiene in your diet, E. coli will take advantage of the opportunity to enter. It is contagious to a certain extent. Once infected with the E. coli virus, recovery will be more difficult.

Sometimes, people have diarrhea because they eat too much or eat a variety of foods. This type of diarrhea is relatively easy to recover from. However, diarrhea caused by E. coli infection requires the adjustment of the state of flora imbalance in order to restore the patient to normal. The following is an introduction to the pathology of E. coli infection:

Escherichia coli belongs to the Enterobacteriaceae family. It is a motile or non-motile Gram-negative bacillus that can decompose lactose and produce acid and gas. There are complex antigenic components on the cell wall of Escherichia coli, which are called O (somal) antigen, H (flagellar) antigen and K (surface) antigen according to their morphology. These antigenic components can also be serotyped separately. There are 160 serotypes of Escherichia coli O antigen, which is the basis for grouping. There are approximately 50 and 90 serotypes of H antigen and K antigen, respectively. Serotyping is mainly used in epidemiological surveys.

Escherichia coli is generally divided into four groups according to their pathogenicity to humans: common Escherichia coli, enteropathogenic Escherichia coli, enterotoxigenic Escherichia coli and invasive Escherichia coli. The latter three are pathogenic bacteria that cause diarrhea. Each bacterial group includes a certain number of serotypes. Among them, enterotoxigenic Escherichia coli can produce heat-stable enterotoxin and heat-inlabile enterotoxin. The production of these two enterotoxins is genetically controlled by plasmids. Plasmids are a type of non-chromosomal DNA that is easier to transmit. The mutual transmission of plasmids can enable non-toxin-producing strains to acquire the ability to produce toxins. Due to the transmission of plasmids, any serotype of Escherichia coli can produce enterotoxins and colony factors, making them pathogenic.

The above introduces the pathological classification of Escherichia coli infection. I hope it will help you better understand Escherichia coli. Ordinary E. coli is not harmful to the human body, and E. coli is widely present in the human body. Only pathogenic E. coli will cause harm to the human body. Therefore, in daily life, we must pay attention to personal hygiene, wash our hands frequently, and pay attention to food hygiene. Only in this way can we effectively avoid the possibility of infection with pathogenic E. coli.