Acute gastroenteritis is a common and frequent disease in summer, mainly manifesting as upper abdominal discomfort, bloating, nausea, vomiting and diarrhea.
The WHO suggests that 90% of diarrhea does not require antimicrobial therapy, while Chinese scholars suggest that about 70% of diarrheal diseases do not require antimicrobial therapy based on the characteristics of the pathogenic spectrum of diarrhea in China and clinical treatment results. However, in reality, many patients mostly take antibiotics and other irregular treatments on their own before consulting a doctor, which is not only detrimental to disease treatment, but also has the risk of antibiotic abuse, bacterial resistance, and even multi-drug resistance due to unreasonable use of antibacterial drugs.
The gastrointestinal tract of a healthy person is inhabited by a wide variety of microorganisms, which are called the intestinal flora. The total weight of the intestinal flora of a normal adult is about 1 to 2 kg, and the number is at least 10^14, which is 10 times the number of human cells and contains 150 times more genes than the number of human genes. In general, acute gastroenteritis is mostly due to a transient imbalance of the human gastrointestinal flora caused by unclean diet or cold in the abdomen, and has a tendency to heal itself.