There are three types of rabies vaccines: 1. Pre-exposure prophylaxis, that is, no animal bites or scratches, but may bear the risk of close contact with animals in the future, and may be infected with rabies. At this time, it is called pre-exposure prophylaxis. Its way of playing is to inject only three injections, one injection each on the zeroth, seventh and twenty-first days, which is called pre-exposure prophylaxis; 2. The five-needle method of post-exposure prevention. The five-needle method requires five injections respectively, and one injection each at 0, 3, 7, 14, and 28 days. The five-needle method is a more classic injection method; 3. Some vaccines can also use a third injection method, which is the 2-1-1 injection procedure after exposure. This kind of injection only requires four injections, and only three injections are required, and it can also achieve a similar effect to the five-needle method. But only for rabies vaccines marked on the instructions that…