Why is the vaccine injected on the arm and the cold and fever injected on the ass?

Everyone knows that vaccines should be given to children in their lives, but when they have a cold or fever, they are usually spanked. In fact, many people do not understand these two different injection requirements. It is injected in different places because the two drugs aim at different diseases. Most vaccines are given by intramuscular injection. The main factor is that muscle tissue contains a large number of immune cells, which can recognize antigens and form corresponding antibodies in the body. In biology, we all know that antigens and antibodies have to be immunized twice to produce a large number of antibodies, so as to prevent the invasion of related bacteria and viruses and achieve immune effect. So intramuscular injection can produce antibodies quickly. Then the main purpose of hip injection is that there is much fat tissue in the hip and the vaccine components cannot be absorbed. It is for this reason that drugs for dispelling cold and reducing fever will be injected through the buttocks, so that although there will be a feeling of swelling and pain after injection, it is less irritating and will not be particularly painful. Moreover, hip muscles are relaxed and there are many blood vessels, which is conducive to the absorption of drugs and is very safe. Because it takes a relatively long time for the vaccine to completely prevent diseases, it is not necessary to start prevention on the arm as soon as possible. For colds and fever, it is best to achieve the effect of eliminating symptoms in a short time, so that spanking is easier to absorb drugs and eliminate the symptoms of colds and fever as soon as possible. Therefore, the vaccine should be injected in the arm, and the cold and fever should be injected in the buttocks. It is because injecting drugs into the buttocks can make the drugs start to work faster, eliminate bacteria or viruses in the body and treat diseases as soon as possible. Injecting vaccine into the arm can produce a large number of antibodies and achieve the effect of preventing diseases. So two different places reflect the different needs of these two drugs. Another reason is that putting the vaccine on your arm can prevent infection. If you put some drugs for treating diseases on your arm, you may be more susceptible to infection and lead to more serious diseases.