Following the A flu.
Recently, the second stream has attracted public attention again.
Many children have just the right amount of influenza.
Infected with influenza B again.
The onset is acute and the changes are rapid.
These two days. Related topics rushed to the hot search again.
Update: Flu on the rise in the South.
The proportion of B stream increases.
On January 4, the Chinese Center for Disease Control and Prevention released the weekly report on influenza surveillance for the 52nd week of 2023 (December 25, 2023 to December 31, 2023).
The data shows that influenza A (type A) is still the main influenza, accounting for 64 of the positive numbers5%。It is worth noting that the proportion of influenza B has been on the rise recently, and the North has risen for 9 consecutive weeks, from 4 weeks in the 44th week2% rose to 47 in week 523%；The South has risen for 6 consecutive weeks, from 47 weeks to 116% rose to 26 in week 524%；The proportion of influenza B in the country has increased for six consecutive weeks.
Hospital: There is indeed an increase in the number of children infected with influenza B.
According to ** report, Li Ran, deputy chief physician of the Department of Infection and Clinical Microbiology of Beijing Chaoyang Hospital affiliated to Capital Medical University, said that the recent number of patients with influenza A has decreased relatively compared with some time ago, while influenza B has increased slightly.
On January 4, Niu Bo, deputy director of the respiratory department of Hebei Provincial Children's Hospital, also said, "Recently, among the children who have been admitted to the hospital, the main ones are adenovirus, influenza B and respiratory syncytial virus infection, and the number of children infected with influenza B has indeed increased." ”
In the past two weeks, the proportion of B flow in the outpatient clinic of our hospital has increased significantly compared with before. On the evening of January 7, Qian Liling, the leader of the Department of Respiratory Science of the Children's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, said in an interview with **.
Netizens said: "The hospital is really full" and "I have been burning for 5 days" ......
What are the symptoms of influenza B?
Influenza is an acute respiratory infection caused by influenza viruses. Influenza viruses can be divided into three types: A (a), B (b), and C (c). Influenza B (influenza B) is an epidemic caused by influenza B (b) virus. The incubation period of influenza B is mostly 1 4 days.
Infected children often have fever (body temperature up to 39 40), headache, muscle aches, general weakness, loss of appetite and other systemic symptoms, accompanied by respiratory symptoms such as cough, sputum production, nasal congestion, runny nose, and sore throat. Gastrointestinal symptoms such as nausea, vomiting, abdominal pain, and diarrhea are more pronounced than those of influenza A. The sick children are mainly concentrated in the school-age stage, and most of them are infected in clusters, and the children in the lower age group are mainly infected by other family members because of the limited activity space.
On social **, some patients said, "Yiliu is the king of kings, and the whole body hurts to the point that the cracks in the bones hurt." Some patients said that they could have a high fever overnight. Qian Liling explained that from her years of clinical experience, most of the symptoms of influenza B patients are relatively milder than those of influenza A patients, but some patients with B influenza have more obvious symptoms in gastrointestinal symptoms, but the overall course of the disease after infection is similar, mostly in 5-7 days.
What is the difference between B and A?
Influenza A and B are both similarly contagious, but influenza A is more likely to cause more severe epidemics due to its ability to genetically mutate. Of course, the specific symptoms and course of infection vary from person to person. Staying up to date with your flu vaccine is important to prevent both types of flu.
There is little difference between the symptoms of influenza A and influenza B, and it is difficult to distinguish according to the clinical manifestations, and it is still necessary to cooperate with the test to diagnose it. It is especially reminded that influenza B is caused by viruses, and the antibiotics such as penicillin and cephalosporin that we commonly use are drugs against bacteria and are useless for influenza B, so it is not recommended that you use antibiotics without authorization as soon as you have a fever.
Passed the first stream or the second stream.
Will there be re-infection?
Influenza A and influenza B are two different subtypes of influenza that do not have a cross-immune mechanism. After influenza A or B infection, if the patient is relatively weak, there is still a chance of infection with another subtype of influenza virus.
The influenza vaccine can prevent both influenza A and influenza B, and people who have been vaccinated are less likely to develop influenza A and B in succession.
In general, there is a small chance of infection with the same subtype of influenza virus within a year. For example, if the A(H3N2) subtype of influenza A virus is currently circulating, and the patient will have immunity to this type of virus after infection, the probability of reinfection with the same type of virus within one year is small. However, because influenza A viruses mutate easily, people who have not been vaccinated may be reinfected with other subtypes of influenza A viruses.
In recent years, because the influenza B virus has not mutated much, the spread range is relatively small, and the probability of reinfection with influenza B within one year is also small.
Doctor: Rest is the best medicine.
Li Tong, chief physician of the Department of Infectious Diseases of Beijing You'an Hospital Affiliated to Capital Medical University, once mentioned, "Relatively speaking, influenza A is more likely to cause a high incidence of influenza cases and spreads faster, while influenza B has a low probability of outbreak and spreads relatively slowly." ”
During the recent period, just approaching the end of the semester, the pressure on the student group will be relatively high, and many of the children who come to the clinic are mainly primary and secondary school students, and the infant group is relatively small, which is mainly due to the dense crowding of primary and secondary school students in the classroom, the relatively closed environment, and the possibility of cross-infection of the virus is stronger. Qian Liling said.
How to reduce the possibility of cross-infection of influenza viruses in a closed environment?Qian Liling said that on the one hand, it is necessary to minimize contact with patients, if patients are isolated at home, it is best to have a separate space, family members wear masks to block the spread of the virus, and it is recommended to disinfect things used by patients, such as dishes and chopsticks, before use.
If there are adults in the family who are infected with the flu, we recommend that some elderly people with chronic diseases can take some specific anti-influenza virus drugs in advance as a way to prevent the flu. If it is a young person, preventive medication is not necessary, and viral infections such as influenza are self-limiting diseases, and the course of the disease is good. However, for the elderly, prophylaxis is mainly due to the fact that influenza infection may worsen the symptoms of some older people with underlying medical conditions. ”
How long after I get the flu can I go back to school?Qian Liling said that if it is clear that it is an influenza virus infection, whether it is a flu A or a flu, it is recommended to rest at home, and it is not recommended to go to school with illness, "Under normal circumstances, children can go to the hospital for a nasopharyngeal swab test after the fever has subsided, and if the flu virus shows negative, you can go to school, if you look at the symptoms, after 3 days after the fever subsides, the contagiousness of the virus is very low, and if you recover well at that time, you can go to school." ”
At present, it has become extremely convenient to buy oseltamivir and mabaloxavir online, and under what circumstances can these drugs be taken directly?How to take medicine scientifically?
Qian Liling pointed out that taking oseltamivir and mabaloxavir needs to be taken under the premise of being diagnosed with influenza, and it is not recommended to buy and take them casually, and the efficacy of these two drugs is actually similar in terms of influenza effect, but the use methods and time of these two drugs are different. Oseltamivir needs to be taken for 5 days in a row, and mabaloxavir only needs to be taken 1 time to complete a course of treatment, but it takes a certain amount of time for both to take effect, and it is not possible to take it immediately.
Therefore, for people who have fever and cough after being infected with the influenza virus, we recommend that they should be targeted first, such as taking fever-reducing drugs, etc., so as to avoid the occurrence of high fever and convulsions caused by the virus. Qian Liling further pointed out that the winter and spring seasons are the peak period of influenza, especially pay attention to good rest, adequate sleep and good immunity has a lot to do with it, "This season itself is the epidemic season of respiratory diseases, and recently it is the time of the final exam of the student group, and the psychological pressure itself is also very large, and psychological pressure will also affect the child's body, rest well is the best medicine, do not stay up late, regular work and rest, which can play a very important role in the prevention of influenza." ”
*: China Economic Net, Xinmin Evening News.
Editor: Li Xiaomei.
Editor: Fu Yali.
Final review: Zhou Jianjun.
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