Where does the COVID-19 vaccine hit [SEP]? Inject it into the deltoid muscle on the outside of the upper arm. Vaccines are usually administered by intramuscular injection, and there are three reasons for using the lateral deltoid muscle injection in the upper arm:
1. It is more convenient to inject on the arm, which can effectively improve vaccination efficiency and facilitate group injection.
2. The probability of vaccine injection is relatively low, so it is more appropriate to choose the deltoid muscle with a smaller muscle range.
3. Studies have shown that vaccine injection produces higher antibody titers in the lateral deltoid muscle of the upper arm.
Can two shots of COVID-19 vaccine be used in one arm?
It is generally recommended to use the left arm. Getting two doses on the same arm does not affect the effectiveness of the vaccine, so it can be administered on the same arm. Generally speaking, the right hand is more active, so it is recommended to administer the vaccine on the left arm to avoid excessive local pain that may affect daily life. But if the original arm is still painful when receiving the second dose, it is recommended to switch to another arm for vaccination to avoid worsening physical discomfort.
The pain of COVID-19 vaccine
varies from person to person. The adverse reaction of vaccine refers to the reaction that has nothing to do with the purpose of vaccination or caused by the characteristics of the vaccine itself. Like other vaccines, some common adverse reactions also occur after the vaccination of COVID-19 vaccine. For the pain of COVID-19 vaccine, it has a lot to do with personal constitution. Common local reactions include swelling, pain, and hardening. Some people may experience discomfort such as fever, fatigue, nausea, vomiting, headache, and diarrhea due to personal differences. Generally, no special treatment is needed, just drink plenty of water and rest.
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