1. According to the inquiry of the public health network, it is slightly unnecessary: when there are only unwell symptoms such as fever, abdominal pain and abdominal distension, there is no need to inject additional drugs.

2. Serious need: there are obvious symptoms such as nausea, vomiting and diarrhea, and the body will lose a lot of water, causing water and electrolyte disorders. Under the guidance of a doctor, additional physiological sodium chloride solution can be injected to replenish the water needed by the body and improve the symptoms of physical discomfort.