Influenza vaccine should be administered with caution to pregnant women who are more than 3 months pregnant. In addition, influenza vaccination is prohibited for the following groups of people: 1. people who are allergic to eggs or other components of the vaccine; 2. people with Grimballi syndrome; 3. pregnant women within 3 months of pregnancy; 4. people with acute febrile illness; 5. people with chronic disease episodes; 6. people with severe allergies; 7. children under 12 years of age who cannot use the whole inactivated virus vaccine; 8. people whose doctors consider them unsuitable for vaccination.