Influenza vaccine “best time to vaccinate” is about to begin

The novel coronavirus pneumonia is affected by the new

crown pneumonia epidemic in the near future. With the coming of autumn and winter, the

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will be in the severe situation of influenza and new crown virus. In response to this situation, Professor Luan Rongsheng of West China School of public health of Sichuan University said yesterday that at present, the most effective way to prevent influenza is to vaccinate influenza vaccine every year. He also explained a series of public concerns, such as whether vaccination is safe, which groups should be vaccinated more, and how to choose. Are

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influenza vaccines safe and effective?

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Luan Rongsheng: because the influenza virus mutates rapidly, it is necessary to change the vaccine strains every year. At present, the most effective way to prevent influenza is to vaccinate influenza vaccine every year.

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but like other medical products, influenza vaccination may also cause adverse reactions. The common side effects are mainly local reactions, including local reactions, such as redness, swelling, induration, pain, burning sensation, etc. systemic reactions include fever, headache, dizziness, drowsiness, fatigue, myalgia, general discomfort, nausea, vomiting, abdominal pain, diarrhea, etc. These adverse reactions are usually mild and usually disappear within a few days, and severe reactions rarely occur. Who needs influenza vaccine?

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Luan Rongsheng: all people are generally susceptible to influenza virus, so people over 6 months old without contraindications can be vaccinated with influenza vaccine. Taking into account the different severity and outcome of influenza in different populations, the technical guidelines for influenza vaccination in China (2019-2020) recommended that children aged 6-5 years, people aged 60 and above, patients with chronic diseases, medical staff, family members and caregivers of infants under 6 months of age, as well as pregnant women or women who are ready to conceive in the influenza season, are recommended as priority vaccination Elephant. When will

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be vaccinated against influenza?

Luan Rongsheng: usually after 2 to 4 weeks of influenza vaccination can produce protective antibodies, so it is best to vaccinate before the influenza epidemic season to provide timely immune protection.

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under normal circumstances, influenza vaccine will be launched in October every year. It is suggested that as long as the influenza vaccine of this year is available, you can vaccinate as soon as possible. If there is no early vaccination, delayed vaccination can still play a protective role, and influenza vaccine can be vaccinated throughout the flu season. How to choose the trivalent and tetravalent vaccines of

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?

Luan Rongsheng: the trivalent inactivated influenza vaccine (iiv3) and the Tetravalent Inactivated Influenza Vaccine (iiv4) are supplied in China. The trivalent vaccine includes three virus types of a (a) H1N1, H3N2 and B (b) Victoria strain virus, and the tetravalent vaccine also includes the Japanese Yamagata influenza virus on this basis. The trivalent and tetravalent vaccines of

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can prevent influenza. It is not necessary to choose trivalent or tetravalent vaccines too much. The recipients can choose any influenza vaccine and vaccinate them in time. Under the background of

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, what is the trend of influenza? Novel coronavirus pneumonia, Luan Rongsheng,

, is expected to weaken in the end of this year than the previous years, in the context of normalization of the new crown pneumonia prevention and control in. After novel coronavirus pneumonia in the first half of the year, all members of the society have formed public places to wear masks, increase interpersonal distance and wash hands frequently, effectively reducing the spread of influenza, and to a certain extent, reduce the burden of “double epidemic” prevention and control.

our reporter Wang Jingyu

original title: the “best vaccination time” of influenza vaccine is about to start