Is the flu vaccine safe?

Patient's question:

No adverse reactions reported
What kind of assistance do you need: The school suggests that parents sign the informed consent form for vaccination with the Japanese encephalitis vaccine, which makes one feel like it's clarifying responsibilities, but it leaves one uneasy. Many people have heard that there are many side effects, and they are hesitant about whether to get vaccinated?

Doctor's answer:

Vaccines can have possible side effects. It is required by the state that vaccination is stamped, which means informed consent. Of course, there are certain side effects. However, they are generally not present.
Survival care: Local adverse reactions mainly include pain, redness, and bumps. Systemic reactions include fever, fatigue, body aches, and even allergic reactions may occur again. These usually occur within 12 hours after vaccination and may last for 1-2 days. These side effects will pass quickly.
Currently, the situation of adverse reactions in China varies, with a common adverse reaction rate of approximately 1%-10%, mostly local reactions. Abnormal or severe reactions are very rare.