People with severe neurological diseases, allergy to vaccine components, chronic acute exacerbations, etc. cannot receive the 3rd dose of New Crown vaccine. 1. People who are allergic to the active ingredients of the vaccine, any of the inactive ingredients, substances used in the production process, or people who have developed an allergy to the same type of vaccine previously; people who have previously experienced a severe allergic reaction to the vaccine (e.g., acute anaphylactic reaction, angioneurotic edema, respiratory distress, etc.). 2. Those with uncontrolled epilepsy and other serious neurological diseases (e.g. transverse myelitis, Guillain-Barre syndrome, demyelinating diseases, etc.). 3. Those who are experiencing fever, or suffering from acute illness, or acute exacerbation of chronic diseases, or uncontrolled severe chronic diseases. 4. Females during pregnancy. After the third dose of New Crown Vaccine, if you experience any discomfort, you should seek medical advice immediately to avoid delay in treatment.