Will there be adverse reactions after receiving the COVID-19 vaccine?

Generally, whether adverse reactions occur after receiving the COVID-19 vaccine depends on individual physical conditions. Most people experience no significant side effects, while a minority may develop mild reactions, which usually resolve spontaneously. The details are as follows:

No adverse reaction is the most common scenario. Vaccines undergo rigorous clinical trials and are proven safe. Most individuals show no abnormal symptoms after vaccination. After observing for 30 minutes post-vaccination without discomfort, they can resume normal daily activities without special treatment—only maintaining regular作息 (daily routines).

A small number of people may experience local or mild systemic reactions. Local reactions commonly include redness, pain, and hard lumps at the injection site, which typically disappear within 2–3 days. Systemic reactions might include low-grade fever, fatigue, headache, and similar symptoms, generally mild in nature. When these occur, avoid scratching the injection site; low-grade fever can be relieved by drinking more water and physical cooling methods, and there is no need for excessive concern.

Proper care after vaccination is important in daily life. On the day of vaccination, keep the injection site dry and clean, and avoid excessive rubbing during bathing. Maintain a light diet, avoid spicy or irritating foods, and limit alcohol consumption. Ensure adequate sleep and avoid strenuous exercise and overexertion, which helps maintain bodily stability and enhances the protective effect of the vaccine.