How much is the flow perception？ Experts explain in detail the hot issues about A stream and B stream.

CCTV News:The latest issue of Influenza Monitoring Weekly released by the National Influenza Center shows that the proportion of influenza A has dropped significantly, while the proportion of influenza B has increased. After A stream, B stream has attracted public attention. So, what’s the difference between stream A and stream B? Is B-stream worse than A-stream?

Doctors said that B-stream is usually small-scale or sporadic, so there is no need to worry too much about the increase of B-stream proportion.

Liu Yafen, Assistant Director of Peking University Institute of Hepatology, Infectious Diseases Doctor, Peking University People’s Hospital:There is not much difference between B-stream and A-stream in clinical symptoms. They are generally characterized by, for example, fever, and may feel cold, headache and joint muscle pain. Some patients may feel sore throat, patients may have cough, and some patients may have discomfort or chest tightness behind the sternum, and they may hold their breath a little.

After being infected with B-stream, will it develop into pneumonia and myocarditis?　

Liu Yafen, Assistant Director of Peking University Institute of Hepatology, Infectious Diseases Doctor, Peking University People’s Hospital:No matter whether it is influenza A or influenza B, serious patients can show symptoms such as pneumonia, myocarditis or some complications of nervous system. However, because most patients are seeing a doctor earlier now, there are not many patients with pneumonia, and the proportion is probably less than 10%.　　

Can A stream and B stream be infected at the same time?

So, if you are infected with influenza A, will you be infected with influenza B again? Can a stream and b stream be infected at the same time? Let’s listen to the experts.

Liu Yafen, Assistant Director of Peking University Institute of Hepatology, Infectious Diseases Doctor, Peking University People’s Hospital:We even met some patients who had both A and B streams, and we also met many patients in clinic, saying how I just had A stream a few days ago, and now I have B stream again. Because in fact, it doesn’t have a cross-protection function. If you want to get a vaccine this year, you will also find that there are trivalent vaccines and tetravalent vaccines, and the vaccine ingredients also cover both A and B streams.　

Can you still exercise vigorously after getting the flu?

Liu Yafen, Assistant Director of Peking University Institute of Hepatology, Infectious Diseases Doctor, Peking University People’s Hospital:When the flu comes, we don’t recommend strenuous exercise, because even if you don’t exercise vigorously, you are prone to complications such as pneumonia and myocarditis. We have also met some young people who think that they have recovered well in the recovery stage and started to exercise vigorously soon. We have also met patients with myocarditis, so don’t exercise vigorously in the process of infection, and it is particularly important to ensure rest.