What are the commonly used methods of vaccination

Normally, whatever drug is injected, it's injected into the muscle. Why you vaccinate your arms instead of your butt is actually pretty simple. It depends on the volume of the injection. In general, injections into the muscle are easily absorbed, but spanking injections are only used in large doses, usually 1-2ml. This is because the gluteus maximus muscles in the buttocks are strong, which is conducive to large injections. On the other hand, the general vaccination dose is about 0.1-0.5ml, very little, sometimes 1ml. The ball is usually struck from the triceps muscle on the human left arm. The muscles in this area are more developed, which can meet the requirements of vaccine injection. The applicability here is stronger than spanking needle, the drug effect is also fast, can also reduce the time to take off pants, improve efficiency, very conducive to group injection.

There was ischemia in the brain of patients who died from COVID-19, and the presence of viral S protein was detected in tissue sections, accompanied by tissue damage and cell death (FIG. 3). ZIKV and other neuroviruses can induce a large number of immune cell infiltration, but this phenomenon was not detected in the brain samples of COVID-19 patients, suggesting that the novel coronavirus can cause specific neurological symptoms.

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