Is the second dose of COVID-19 vaccine still under observation? Why observe the second dose of COVID-19 vaccine?

2. You can leave at least half an hour after vaccination, mainly for fear of abnormal reaction. The most common are anaphylactic shock or dizziness and allergic skin rash. Anaphylactic shock usually occurs within minutes or seconds after vaccination. It needs to win a few minutes of rescue. If not rescued in time, it may endanger life in a short time. Other people will also have dizziness, nausea, pale face, cold hands and feet, rapid heartbeat and other symptoms when fasting, fatigue or indoor heat stress. In severe cases, it can also lead to dizziness, such as slow breathing and heartbeat and a drop in blood pressure. Be sure to treat the symptoms, so be sure to observe for half an hour before you leave.

3. Generally, it needs to be observed in the observation room for half an hour after injection. This is because even if the vaccine is safe and the vaccination process is standardized, a few children will have serious abnormal reactions due to individual differences. After vaccination, there may be acute and severe adverse reactions, such as anaphylactic shock and syncope, which need to be dealt with in time. If it is not handled in time, it will be life-threatening.