Recent. Some people shared their experience of catching a cold and fever on the Internet: the high fever persisted, the muscles and joints of the whole body were sore, and the fatigue continued after turning negative
Some netizens also said: "The second stream is the king of kings, and the whole body hurts to the point that the cracks in the bones hurt" Is the performance of the second stream more serious?
How to deal with the attack of the second stream?
Experts have something to say.
According to the weekly report for the 52nd week of 2023 (December 25, 2023 to December 31, 2023) released by the National Influenza Center of China on January 4, the proportion of influenza B is increasing, although it is still dominated by influenza AThe North has risen for 9 consecutive weeks, from 44 in the 44th week2% rose to 47 in week 523%The South has risen for six consecutive weeks, from 11 in the 47th week6% rose to 52 in week 264%
Experts say that influenza A and influenza B are two different subtypes of influenza and 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
1. Simplex type:will appearHigh fever, headache, fatigue, loss of appetiteand other manifestations, a small number may appearCough, nasal congestion, dry throat, hoarsenessand other symptoms. The body temperature generally reaches its maximum value in 1 2 days, gradually decreases in 3 4 days, and the symptoms gradually improve after the fever is reduced. 2. Gastrointestinal type:The main manifestations are:Vomiting, abdominal pain, diarrhea, decreased appetiteand other performances.
3. Pneumonia type:The patient presentsPersistent fever, tachypnea, cyanosis, hemoptysis, extreme fatigueand even respiratory failure. 
4. Poisoning type:can be presentHigh fever, convulsionsand other manifestations of systemic toxemia, which may occur in severe casesShock and even death
Influenza B is usually smaller and milder than influenza A。For some patients with mild symptoms who have strong immunity and good health, they can be cured on their own. 
In fact, whether it is the previous new crown, or the first and second flu, some people have bone pain. Lin Hua, deputy chief physician of the Department of Respiratory Medicine of the Third Xiangya Hospital of Central South University, said that patients with upper respiratory tract infectious diseases caused by rhinovirus, adenovirus, influenza virus and other pathogenic bacterial infections can have body aches and fatigue. 
When pathogenic bacteria enter the body, they will destroy immunity and release inflammatory mediators, such as prostacyclin, which will spread throughout the body with blood circulation and be used for bones, causing patients to have bone pain。In addition, pathogenic bacteria can cause skeletal muscle spasm and contraction, and if the surrounding central nervous system is stimulated, some patients will also have bone pain, so bone pain will occur. 
Influenza antivirals, oral oseltamivir is commonly used in hospitals, and intravenous peramivir is also used in some hospitals. These drugs can block the replication of the virus, shorten the course of the disease, generally take 2 to 3 days, and the body temperature can drop significantly. Oral oseltamivir for a 5-day courseIt is recommended that patients use up all 5 days of medicine even if their body temperature is normal to reduce the probability of influenza virus resistance. 
In addition, for children over 5 years old, mabaloxavir tablets can be used, which can also have a good antiviral effect. Mabaloxavir tablets can be taken once, which can achieve the same effect of oseltamivir for 5 days. Note:The above drugs need to be taken under the premise of confirmed influenza infection, and it is not recommended to buy and take them casually
What should I do if I am infected with influenza B?Doctor reminds: After being infected with influenza B, these 2 things need to be paid attention to:
1.Take anti-flu medications as soon as possible and don't put it off
There is no difference between influenza B and influenza A, mainly with anti-influenza drugs, which can shorten the course of the disease. Take the medicine as soon as possible, if you take the medicine late, you will either get better, or it will become serious, and the effect will be greatly reduced.
Influenza symptoms appear early to block viral replication, and the drug is the most effective, among themAntiviral** within 48 hours can receive the best results。After 48 hours, there is also benefit from the use of antiviral drugs. It is recommended to take the medicine as directed by the doctor.
Note: Patients with underlying lung diseases, or immunocompromised, diabetic, obese, pregnant women, including dialysis patients, etcIt is advisable to go to the hospital as soon as possible
2.Be sure to rest in time and don't procrastinate
In December 2023, a 14-year-old influenza B patient admitted to a hospital in Zhejiang Province "took a turn" of mycoplasma pneumonia, influenza A, and influenza B in just over a month. The doctor saidRepeated infection with mycoplasma, influenza A, and influenza B in a short period of time is related to low immunity and lack of recovery and rest
Health Guangdong, China National Influenza Center, Health Times, First Hospital of Zhejiang University, The Paper, etc