1, after vaccination, other injection sites may have symptoms such as redness, pain and itching. Generally, it can be cold compressed within 24 hours, and hot compressed for more than 24 hours can reduce swelling. Pay attention to local cleaning, do not scratch, to avoid infection and inflammation.

2. Most subcutaneous injections of vaccines will cause local redness and swelling of the needle eye for 24 hours or more. Generally, the diameter is less than 2.5 cm, less than 2.5 cm, or more than 5 cm in severe cases, and lymphadenopathy or lymphadenitis and pain may occur. In this case, you should rest properly, drink plenty of warm water, and don't have slight redness and swelling during treatment.

3, in the heavier 24 hours, you can use a clean towel cold compress. About 5 minutes each time, twice a day, and hot compress with a clean towel after 24 hours. Every time 10- 15 minutes, it should be noted that the injection part of BCG cannot be hot compressed.

4. Injection of vaccine containing absorbent that is not easily absorbed will stimulate connective tissue proliferation and form knots, or hot compress will help absorption. 48 hours after inoculation, the symptoms of lymphadenopathy or lymphadenitis and pain can gradually subside. 2-3 days after inoculation, proper drinking water will help these reactions to subside as soon as possible.