People’s Daily Online, Beijing, December 10 (Reporter Qiao Yeqiong) Today, the National Health and Wellness Commission held a press conference to introduce the prevention and treatment of respiratory diseases in winter and answer questions from reporters.

　　At the meeting, a reporter asked whether the flu vaccine should be continued if the flu-like symptoms have already appeared, but they have not been diagnosed and recovered by themselves. When should I be vaccinated?

　　In this regard, Xia Gang, director of the Department of Health and Immunity of the National Bureau for Disease Control and Prevention, said that if flu-like symptoms have already appeared, it is still recommended to continue to vaccinate against influenza after being diagnosed and recovering.

　　Xia Gang explained that, first, the symptoms of respiratory tract infection are not specific, and flu-like symptoms such as fever and headache may occur in various pathogenic infections. However, these symptoms are not necessarily caused by influenza virus, but also by other pathogens, the most common being the common cold. Second, there are many types and subtypes of influenza virus that can cause epidemic. For example, there are both A and B, and in A, there are both H1N1 subtype and H3N2 subtype. After being infected with a certain type or subtype, there may be the risk of being infected with other types or subtypes. Influenza vaccine is a multivalent vaccine covering many different types and subtypes, which are commonly used trivalent and tetravalent vaccines. If you are vaccinated after being infected with a certain type of influenza, which contains other types of influenza components, you can still play a role in preventing this type of influenza.

　　Xia Gang said that in addition, in the same epidemic season, different types and subtypes are usually prevalent together. For example, at present, influenza A (H3N2 subtype) is the main strain, followed by influenza B. In the past, there have been cases in which the dominant strains gradually changed from one type to another in the same epidemic season. Therefore, even if flu-like symptoms have appeared recently, it is recommended to get flu vaccine as soon as possible after recovery, especially for key groups such as the elderly. Vaccination can reduce infection and reduce the risk of severe illness and death.

　　CCTV News:In the previous plots, corn or soybean were planted separately. Why should we promote this "mixed planting" mode of soybean and corn strip composite planting now?

　　Developing soybean and corn strip compound planting is an important way to break the constraints of cultivated land resources, tap the potential and improve soybean productivity.

　　The suitable strip structure is 2 to 4 rows of corn for every 4 to 6 rows of soybeans, and the final plan should be determined according to the actual production conditions and equipment supporting conditions in various places.

　　Through the form of intercropping soybean and corn, the allocation of light and heat resources can be optimized, and corn leaves block part of the sunlight to avoid direct soybean, so that soybean can grow sturdily. At the same time, rhizobia on soybean root system can fix nitrogen and increase soil fertility. Through this model, we can achieve the goal of basically not reducing corn production and harvesting more soybeans in one season.

　　2022 is the first year of large-scale demonstration and promotion of soybean and corn strip compound planting, covering an area of more than 15 million mu. A number of suitable varieties have been initially selected, a number of technical models have been integrated, a number of special machines and tools have been equipped, and a number of planting experts have been trained.

　　In 2023, the state will continue to support the promotion of soybean and corn strip compound planting, focusing on the northwest, Huanghuaihai, southwest and middle and lower reaches of the Yangtze River, and the central government will give subsidies according to the standard of 150 yuan per mu. In 2023, the soybean and corn strip compound planting area has been expanded to 20 million mu.