2024-03-07 05:52:55

[Japan/Tokyo/Travel/Sakura/Influenza/Influenza A/Influenza B]Japan has ushered in the cherry blossom season, and I believe many people are already preparing to fly to the local area to enjoy the cherry blossoms. However, there is news that influenza B has been prevalent in Tokyo recently, and its prevalence has surpassed that of influenza A. Experts say it has reached a “once-in-ten-year” level. It is expected that the number will continue to increase, with the risk of explosive growth.

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Influenza B outbreak in Japan

According to comprehensive foreign media reports, in February this year, a clinic in Tokyo detected 22 people infected with influenza B. By March, the number of people infected with influenza B in the clinic had increased to 72. The report also pointed out that there were only sporadic infection numbers of influenza B in December last year. However, between February 2 and 11 this year, it was found that each medical institution received an average of 23.9 influenza patients, of which more than 60% were infected with influenza B. , in other words, each medical institution treats regarding 15 influenza B patients on average, which shows that Japan is now at the peak of a new phase of influenza.

Hiromichi Ito, president of Ito Oji Kamiya Medical and Surgical Clinic, said:

I don’t recall influenza B cases increasing to this extent in recent years. This situation may lead to an explosive increase in the number of influenza infections.

She added that influenza B has always been less prevalent, so most citizens do not have immunity once morest influenza B and are therefore more susceptible to infection, especially children.

Risk of secondary infection

The report pointed out that the symptoms of influenza B and influenza A are similar, including high fever, cough, joint pain and sore throat, accompanied by vomiting, diarrhea and other digestive system symptoms. However, the onset of influenza B is slower, so the public is easy to ignore it and delay seeking medical treatment. , while increasing communication opportunities.

Hiromichi Ito revealed that influenza A was mainly prevalent in December last year, but recently influenza B has been prevalent. Although they are both influenza, the immunity of patients who have been infected with influenza A is ineffective once morest influenza B. Therefore, There is still a risk of secondary infection, and citizens are reminded to pay more attention.

In this regard, she believes that there will be two major situations in Japan in the future:

• Everyone may get the flu twice this winter.
• Children with poor immunity have the opportunity to infect their parents, who then bring the virus to the workplace, forming a vicious cycle, and Japan will see an “explosive epidemic.”

She reminded everyone that “large temperature changes” and “dry weather” have contributed to the outbreak of influenza B virus. Citizens must wash their hands frequently, wear masks and avoid close contact with people with cold symptoms to protect their own health and the health of others.

Seasonal influenza type 8 high-risk individuals

A spokesman for the Center for Health Protection has said that influenza can cause serious illness in high-risk groups, but healthy people may also be affected. Among them, patients who contract influenza and COVID-19 at the same time are more likely to suffer from severe complications and death. It is equally important to get the influenza vaccine and the COVID-19 vaccine, especially children, community-based elderly people and the elderly living in institutions should get it as soon as possible. .

Zhao Zhihui, a family medicine specialist, once pointed out in an interview that the influenza vaccine is a seasonal human influenza vaccine, which mainly prevents the two flu peak periods within a year, including January to March in winter and July to August in summer. Under normal circumstances, every year Everyone needs to get a flu vaccine to prevent influenza A and influenza B.

According to the recommendations of the Scientific Committee on Vaccine Preventable Diseases under the Center for Health Protection of the Department of Health, the following people in Hong Kong should be given priority for seasonal influenza vaccination:

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Editor in charge: Luo Jiaxin

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