How to get an expert in an influenza vaccine to answer

Speaking of flu, many people think that it is just a "severe cold", and this is not the case. There is no obvious fever in ordinary colds, and flu is an acute respiratory infectious disease caused by the flu virus. The common symptoms are fever, headache, cough, sore throat, nasal congestion and runny nose. Municipal disease control experts remind that before the arrival of the high incidence of influenza, inoculation of influenza vaccines in advance is an effective means to prevent flu.

Why do influenza vaccines need to be vaccinated every year? On the one hand, because the frequency of variation of influenza virus is very high, the flu virus that has mutated can be infected again infected with the previously immune host, resulting in repeated influenza influenza. Therefore, the ingredients we vaccinated each year are different, and we will make corresponding adjustments according to the variation of the flu virus. In addition, the protection period of influenza vaccine is not long. Protective antibodies generated after vaccination of influenza vaccine can generally last 6 to 8 months, and will gradually weaken over time. Only in vaccination every year can continue immunity.

Why did I get a cold after a flu vaccine? Commonly used influenza vaccines include three -valent influenza vaccine (IIV3), four -valent influenza vaccine (IIV4), and a three -price reduction of poisoning fluidum vaccine (LAIV3). Subsidal types of influenza virus do not prevent influenza caused by all flu viruses. Therefore, inoculating influenza vaccines can reduce the risk of influenza, but cannot completely resist influenza. In fact, the World Health Organization (WHO) will analyze the influenza strains this year according to the global influenza epidemic situation of last year, and then the Congress will make the corresponding vaccine according to the World Health Organization (WHO) suggestions.

In addition, the effectiveness of the vaccine will be affected by the age and physical health of the vaccination. Therefore, even if the vaccine is vaccinated, there will still be a certain possibility of influenza. Moreover, flu vaccines can only prevent influenza viruses caused by influenza virus, and normal colds are not within the scope of prevention.

Can people who are allergic to eggs cannot be vaccinated? Influenza vaccine is generally prepared through chicken embryo during the preparation process, so it will remain extremely small amount of egg components. This is why there is a saying that "egg allergies are not suitable for vaccination of influenza vaccines". However, with the improvement of the preparation process, the egg protein content of the flu vaccine is already very low, and it will hardly cause severe allergic reactions.

According to the relevant content of the "China Influenza Vaccine Prevention Technology Guide (2022-2023)" and "Pharmacopoeia of the People's Republic of China" (2015 version and 2020), egg allergies are not taboos for vaccination of flu vaccines. However, among the currently listed influenza vaccines in China, whether it is an activated vaccine or a drug reduction vaccine, the taboos of the instruction manual are "disabled of eggs (ovard protein or chicken -source protein) allergic". In this case, it is recommended to obey the opinions of the doctor, combined with the specific situation of the individual, and then decide whether to vaccinate the flu vaccine. Severe allergies to eggs, or those who have tightness, diarrhea, and even people who have disorders occur.

Which groups should inoculate influenza vaccines? Based on the safety and effectiveness of influenza vaccines, and the characteristics of the villain of the influenza virus, in addition to individual people who have severe allergic taboos, all people who have been 6 months old should inoculate influenza vaccines.

Recently, the "Chinese Influenza Vaccine Prevention Technical Guide (2022-2023)" pointed out that combined with the situation of new crown pneumonia this year, the following key points and high-risk people are vaccinated in time: medical staff, including clinical treatment personnel, public health personnel, hygiene hygiene Quarantine personnel, etc.; Large -scale event participants and guarantee personnel; elderly care institutions, long -term care institutions, welfare homes and other people gathered fragile people and employees; key venues, such as childcare institutions, teachers and students of primary and secondary schools, and supervisory institutions. In the detainees and staff; other high -risk people, including the elderly at home 60 and over, June to 5 years old children, chronic diseases, family members and caregivers of infants under June, and pregnant women.

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