The flu can’t be delayed, so early diagnosis and early treatment are needed.

　　Zhejiang Online January 8 th (Reporter Zhu Ping correspondent Zhang Yingying)After A-stream, B-stream has received public attention recently. Last week, the topic of "A stream just recruited B stream" rushed to the hot search. According to the latest issue of Influenza Monitoring Weekly released by the National Influenza Center on January 4th, the proportion of influenza A H3N2 strains that had previously dominated the transmission dropped sharply, while the proportion of influenza B strains increased sharply. Many people wonder: why are there repeated infections with influenza A and B? Is there a high probability of repeated infection? What’s the difference between flu and common cold? In response to the above hot issues, the reporter interviewed frontline clinical experts.

　　"Since the end of December last year, the number of patients with B-stream has increased significantly." Jin Jie, director of the Infectious Diseases Department of the First People’s Hospital of Hangzhou, told the reporter that most of the fever outpatients in the hospital are respiratory diseases, mainly influenza A and B, as well as patients infected with adenovirus, respiratory syncytial virus and mycoplasma pneumoniae. From the data of the past week, more than 2,000 cases of B-stream were detected in the hospital, and the number of infections has exceeded that of A-stream.

　　The reporter learned from the outpatient departments of children’s hospital affiliated to Zhejiang University School of Medicine, Hangzhou Children’s Hospital and other hospitals that the incidence of B-stream is relatively high from the current situation.

　　What is B-stream? How to distinguish between swine flu and swine flu?

　　To distinguish influenza A and B, we must first know influenza. Influenza is an acute respiratory infectious disease caused by influenza virus. Influenza viruses can be divided into three types: A, B and C, and influenza B is influenza caused by influenza B virus.

　　There is little difference between the symptoms of A stream and B stream, so it is difficult to distinguish them according to clinical manifestations, and it needs to be diagnosed with cooperation with tests. Director Jin Jie said that whether it is A stream or B stream, it is quite different from the common cold in symptoms. Influenza has a rapid onset and changes. The body temperature of patients often rises rapidly within a few hours to 24 hours, reaching 39℃ to 40℃, or even higher, accompanied by other symptoms of the whole body, such as headache, muscle aches and joint pain. The common cold is mainly manifested as sneezing, runny nose and other symptoms of upper respiratory tract infection. The systemic symptoms are mild, and there will be no high fever or only low fever. Generally, it can heal itself in 3 to 5 days.

　　"From the time of onset, influenza generally enters a high incidence in autumn and winter." Jin Jie introduced that the period from New Year’s Day to New Year’s Day is also a period of high incidence of influenza, which usually lasts until after the Spring Festival.

　　Generally speaking, it is very unlikely to be infected with the same subtype of influenza virus within one year. However, influenza A and B are two different subtypes of influenza and do not have cross-immune mechanism. After being infected with influenza A or B, if the patient’s constitution is relatively weak, it is still possible to be infected with another subtype of influenza virus.

　　Not long ago, Jin Jie was admitted to several children who were recruited as "Shuangliu", especially those in the third and third grades of senior high school, who were under great pressure to study. When they were sick, they always felt that they could survive. Some students even wrote their homework while having a fever, and returned to school as soon as their fever dropped. On the contrary, it will easily lead to repeated or aggravated illness, and if it is serious, it will also cause lung infection and increase the risk of infecting others.

　　In addition, patients with basic diseases such as diabetes, chronic bronchitis, emphysema, etc., are also more prone to repeated infections. If they are not treated in time, they will easily develop into severe pneumonia or lead to aggravation of basic diseases.

　　During the interview, many experts said that unlike A stream, B stream can cause mass popularity, so there is no need to worry too much about the rising proportion.

　　"At present, we have corresponding drugs for most respiratory diseases such as influenza, especially influenza. The earlier the treatment, the better." In view of the current prevalence of respiratory infectious diseases, Jin Jie reminded that we should strengthen our own immunity, don’t stay up when we are sick, and try our best to make early diagnosis, early isolation and early treatment.

　　In addition, in terms of preventive measures, wearing a mask is the simplest and most effective way to prevent the spread of respiratory diseases in crowded public places; For people who have never had the flu, it is recommended to get the flu vaccine, which is also the most economical and effective means to prevent the flu.