中南美洲/東南亞：登革熱病例創歷史新高
・新型「超強抵抗力蚊」出現
・如何保護自己免受感染？
我們將為您提供 NHK 上發表的文章摘要。
Discovery of “super-resistant mosquitoes” that are resistant to insecticides:
The existence of a “new mosquito” that threatens us has been revealed.
1. A mosquito called “super-resistant mosquito” that is resistant to insecticides.
2. A Japanese research team was the first in the world to discover it.
National Institute of Infectious Diseases: Dr. Shinji Kasai
“Super-resistant mosquitoes” cannot be killed unless 1000 times the amount of insecticide is used.
How ineffective are insecticides against them in reality?
1. If you spray insecticide on normal mosquitoes, they will all die within 30 seconds.
2. However, not a single “super-resistant mosquito” will die even after 10 minutes.
Discovery of “super-resistant mosquitoes” in Southeast Asia:
The increase in “super-resistant mosquitoes” is related to the spread of dengue fever.
1. Kasai discovered the “super resistant mosquito” in Southeast Asia two years ago.
2. It is said that it invaded Chubu Centrair International Airport in Japan in 2017.
Currently, they are working with specialist institutions around the world to quickly clarify the whole picture.
National Institute of Infectious Diseases: Dr. Shinji Kasai
Mosquitoes with traits and genes that are resistant to insecticides survive.
1. By repeatedly using the same mosquito insecticide,
2. Mosquitoes gradually become resistant and become the majority in the population.
Mosquito repellent without chemical ingredients:
The number of dengue fever infections in Thailand exceeded 130,000 last year.
Recently, a mosquito repellent cream developed in Japan has started to be used.
Uses silicone oil:
The mosquito repellent cream, which has the same ingredients as shampoo, is applied to the arm.
An experiment was conducted by placing it in a container with a large number of mosquitoes.
1. Mosquitoes do not bite skin that has cream applied to it.
2. Even if a mosquito lands on the skin, it leaves within one second.
Characteristics of mosquito legs:
Mosquitoes do not bite skin that has been coated with silicone oil cream.
Structure of mosquito legs:
1. Mosquito legs have many fine bumps and have the property of repelling water.
2. Silicone oil immediately penetrates the surface of mosquito legs.
Experiment with mosquito legs:
Water and silicone oil were dropped onto a surface that resembled a mosquito leg.
When the mosquito comes into contact with the silicone oil, it dislikes it and flies away.
Daily necessities manufacturer: Nakagawa, head of research and development
In Thailand, ‘medicine that easily protects you from mosquitoes without killing them’ is becoming more popular.
1. In summer in Thailand, there are always many mosquitoes in ordinary homes.
2. If resistant mosquitoes invade, they cannot be easily killed by insecticides.
Gifu University: Startup company
Using patented technology from Gifu University, we developed clothes that repel mosquitoes.
Holes are made in the fibers themselves, and repellents are trapped in them.
This resulted in a material that was water resistant and had a longer-lasting effect.
A machine that creates microscopic holes in fabrics
1. Special fabric processing technology is used to make clothes.
2. The microscopic holes are evenly spaced.
The size is 20-30 nm, 1/1000 the width of a human hair.
Materials development manufacturer: President Chosokabe Junya
The number of dengue fever infections is increasing rapidly in Malaysia.
The materials development manufacturer and Malaysia will jointly commercialize the product.
1. There are many rainy seasons in Southeast Asia, including Malaysia.
2. There is a high demand for clothing that has a longer-lasting effect.
https://www3.nhk.or.jp/news/html/20240603/k10014465991000.html