Trivalent influenza vaccines generally include influenza A (H 1N 1), H3N2 and influenza B, while tetravalent influenza vaccines also include the dominant strain B(Yamagata) of the invisible influenza virus. Comparatively speaking, tetravalent influenza vaccine has one more type than trivalent influenza vaccine, and its protection scope is also a little wider than trivalent influenza vaccine. However, the change of influenza virus will be influenced by many factors and mutate. Every time the flu breaks out, it may mutate into another new influenza virus. There is no difference in safety between tetravalent influenza vaccine and trivalent influenza vaccine, and there is no significant difference in safety between domestic influenza vaccine and imported influenza vaccine. Both trivalent and tetravalent vaccines can prevent influenza infection. If you don't recommend it in advance, you can voluntarily get any flu vaccine.

What is the age of vaccination?

According to the age of the population, people under 3 years old can only be vaccinated with trivalent vaccine, and people over 3 years old can be vaccinated with trivalent or tetravalent vaccine.

When is the best time for vaccination?

The best time to get the flu vaccine is before the flu-prone season, which is about September or June 5438+ 10. It is also possible to get the flu vaccine after the flu starts.

Can the vaccine 100% prevent influenza?

I can't. Vaccination will greatly reduce the risk of German influenza. If you are still infected, vaccination can relieve flu symptoms and reduce the risk of serious complications.

Can I not get vaccinated?

If the resistance is strong, you don't often catch a cold, and you are not easily infected during the outbreak of influenza, you can choose not to vaccinate according to your own situation. However, influenza has the characteristics of acute onset, rapid spread and wide range. Choosing flu vaccine can not only reduce the risk of infection, but also save yourself from the painful process of catching a cold, which is more economical than seeking medical treatment after catching a cold.

Besides vaccines, what other methods can prevent the flu?

(1) Pay attention to personal hygiene habits and wash your hands frequently, especially after eating and defecating, touching your eyes, nose or mouth, going out and going home; Try to clean with hand sanitizer or soap and tap water.

(2) Keep the environment clean and ventilated, and try to reduce it to places with dense people and dirty air.

(3) Contact with patients with respiratory infection should be avoided as far as possible, and personal protection should be done when contact is necessary, such as wearing a mask.

(4) According to the temperature change, increase or decrease clothes for children, have a balanced diet, strengthen exercise, ensure sleep, and enhance physical fitness and immunity.