- What is influenza?
- Influenza is infectious disease caused by influenza virus, such as high
fever, arthralgia, headache, boredom.
It is mainly infected by droplet infection and contact infection.
出典：「感染症発生動向調査 感染症週報（IDWR) 2017年第50週」（国立感染症研究所Ｗｅｂサイト） https://www.niid.go.jp/niid/ja/idwr-dl/2017.htmlより
The unit of the horizontal axis is "Week". From the 1st week to the 17th week, from the 39th week to the 53rd week, the "number of reports per fixed point" is larger than others. Converting to the month, it is roughly October to April.
* Reported per fixed point: 1 Average reported number per medical institution
- Seasonal influenza and H1N1 influenza
- In recent years, the new strain of influenza often heard. The threat of infection differs from seasonal influenza. Seasonal influenza is more prevalent than in the past, and many people have immunity against the influenza virus. Meanwhile, the H1N1 influenza has occurred since the spring of 2009 and has never been prevalent in the past, so many people are not immunized and the infection will expand.
- Types of influenza
- Influenza viruses have type A, type B, type C. It is A type and B type that is popular each year. Each virus structure differs, and the symptom's weight also differs.
- Influenza infecting animals
- Frequently asked is "bird flu". There are other "swine influenza" "equine flu" "cat flu". These are generally infected from animals to animals, but there is concern that this will infect animals to humans.
- A/H1N1pdm
画像提供：国立感染症研究所
- Avian influenza A(H7N9)
画像提供：国立感染症研究所
- Medicine
- Anti-influenza drugs include "Tamiflu", "Relenza",
"Inabiru" and "Rapiacta". "Tamiflu" is an
internal medicine, "Relenza" and "Innabir" are inhaled
drugs, "Rapiacta" is injection.
There are conditions such as age etc. Also, in the past, influenza pandemics caused a shortage of anti-influenza medicines. As of 2017, we decide to stock 47.7 million people, which is less than 27% of the population of anti-influenza drugs, as "stockpiling target amount" in the country. We will stock 37.7 million people deducting 10 million of the circulation stockpile from 47.7 million people equally in the country and the prefecture.
Go back to the "droplet infection" page.
