夏の行楽、「虫」に気をつけて スズメバチ、マダニ、ガの幼虫…(６０代男性がマダニ感染症)
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Wasp larvae, ticks, moth has been careful holidaymakers summer, the "insects" ...
To enter the hills and fields, such as mountain climbing and camping, opportunity to touch naturally there are many summer. You want to enjoy rock out, but is necessary to be careful, "insects". There are also insects that can cause inflammation to touch, or to develop infection by bites. I heard an expert you need to pay attention to any point. (Sasaki poem)
◆ I reduce exposure of the skin
"Insect that requires attention mainly in the forest is the hornet larvae, ticks, moth". Miyuki SumiTadashi Itami City Museum of Insects of (Itami, Hyogo) curator researcher points out that term.
Vespa mandarinia japonica Many inhabit the wooded area. The pain violently Once stung, to cause such as abdominal pain and headache. To cause an allergic reaction when stung many times, leading to death in the worst case.
Nest is greatest, the increasing aggressiveness It's autumn, summer and strive to build nests also we need to be careful. Vespa mandarinia japonica is attacked for making a nest in the ground, and step on it by mistake, but the bee guards come intimidated before that. If you see a Vespa mandarinia japonica flying in one animal, either wait to pass, slip away. This is because there is a property of gradually towards what is moving. SumiTadashi's "You have threatened to issue a ticking sound approaches. Please do take the distance in that case," he said.
Note also ticks activities become active in the spring - autumn. It enters into the clothes, biting the soft part of the skin of the human body such as the abdomen or side, and suck the blood. In recent years, mainly in western Japan, cases of infection to severe febrile thrombocytopenia syndrome by being bitten by a tick, death has occurred. Cause inflammation Touching hair larvae Chadokuga also with poison.
To avoid damage from insects such, "reducing the exposure of the skin such as clothes" measures basic (SumiTadashi's). Wear long sleeves, long pants, and sandals are not allowed. It is possible that such lacerations and rash by plants also avoided by covering the skin. In the case of wasps, come chasing you think the beast black ones, without Na forget hat that covers the hair. In order to avoid the invasion, sow a washcloth or towel on the neck also good in the case of ticks. Such as spray of insect repellent is also valid, but "because it is sensitive to smell, you may also be subject to attack on the contrary is too attached, such as wasps" (SumiTadashi san).
◆ It must also be noted in overseas travel
It is necessary to pay attention to the insects that transmit an infectious disease that does not exist in Japan in overseas travel. Infection cases are often dengue and malaria mosquitoes. According to Mr. Toshiharu Ehira Osaka Quarantine Station of (Osaka City Minato-ku) quarantine health department, because there is no immunity, risk becomes higher travelers from non-endemic areas such as Japan. Tropical Asia and Latin America, and Africa, the occurrence of dengue fever and malaria are widely distributed in subtropical regions. In recent years, domestic infection cases that have been confirmed in Greece and South Korea, which has been successfully conquered malaria.
Ehira's To prevent infection, "addition to refrain from exposure of the skin, mosquito coils. Might be good is also useful to use the agent insect repellent active ingredient DEET such as (DEET) are included," he said. The property, to confirm screen door with a solid is not installed. In order to work in the daytime, mosquitoes that nocturnal, dengue to pay particular attention to outdoor activities of that time period in the country of occurrence example mosquitoes that transmit malaria.
Ehira's calling "malaria dengue fever also symptoms will appear in a few days after infection. Would you like to consult a quarantine station in the airport after returning home, abnormal comes out, I want you to visit a medical institution to tell the travel destination," said there.
■ Use limiting agent insect repellent to the "Deet" children
DEET to be effective as a component of the anti-insect agent that is used for skin for (DEET), Ministry of Health, Labour and Welfare is a limit on the use of children from safety. The ministry, 1-3 times a day 12 years ▽ 2 years of age or once a day 2 years ▽ 6 months or more that is not used for infants less than 6 months - is set to. You are encouraged to read a note, to be used under the guidance and supervision of an adult when using.
Tick infection 60 Young Men
The 8th, Okayama announced 60 Young Men living (Bizen, Akaiwa, Wake-cho) in Okayama Prefecture Bizen health center east 備支 jurisdiction within, and was infected with severe febrile thrombocytopenia syndrome ticks is mediated (SFTS). Confirmation of infection in the same prefecture fourth person.
According to Okayama, there were symptoms such as diarrhea and fever of 38 degrees stand men, but it is getting better now. That there is a possibility that bites in ticks when you cut the grass in a rice field near his home in late July, was infected.
The 1st of this month, and admitted to hospital in the city, men were hospitalized. Because the symptoms that there is a trace ticks like stabbed a total of two places on the left thigh and left shoulder, SFTS infection and a decrease in platelet suspected was also seen, the hospital will contact the city health department. Virus has been confirmed by blood tests (Tokyo) National Institute of Infectious Diseases.
According to the Ministry of Health, Labour and Welfare, 86 people were infected so far in Japan, confirm the death of 30 people out. 80s women have died in July last year in the prefecture.
Because the activity becomes active from spring to autumn, the city Health Department has said "I want to strive to prevent and avoid the exposure of the skin when it enters the hills and fields, such as body wash in the shower immediately after coming home" ticks.
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夏の行楽、「虫」に気をつけて スズメバチ、マダニ、ガの幼虫…
夏はキャンプや登山などで野山に入り、自然に触れる機会も多い。思い切り楽しみたいが、注意が必要なのが「虫」。触れて炎症を起こしたり、刺されて感染症を発症したりする虫もある。どんな点に注意が必要か専門家に聞いた。（佐々木詩）
◆肌の露出減らす
「森の中で主に注意が必要な虫はスズメバチ、マダニ、ガの幼虫です」。伊丹市昆虫館（兵庫県伊丹市）学芸研究員の角正美雪さんは、こう指摘する。
オオスズメバチは雑木林に多く生息。刺されると激しく痛み、頭痛や腹痛などを引き起こす。何度も刺されるとアレルギー反応を起こし、最悪の場合は死に至る。
最も巣が大きくなり、攻撃性を増すのは秋だが、巣作りに励む夏も注意が必要だ。オオスズメバチは地中に巣を作るため、誤って踏むと襲われるが、その前に見張りのハチが威嚇してくる。１匹で飛んでいるオオスズメバチを見たら、通り過ぎるのを待つか、静かに立ち去る。動いているものに向かっていく性質があるためだ。「近づくとカチカチという音を出して威嚇してきます。その場合は距離を取るようにしてください」と角正さん。
春～秋に活動が活発になるマダニにも注意。衣服に入り込み、脇や腹部など人体の皮膚の軟らかい部分にかみつき、血を吸う。近年、西日本を中心に、マダニにかまれることで重症熱性血小板減少症候群に感染、死亡するケースが起きている。チャドクガの幼虫も毒を持つ体毛に触れると炎症を引き起こす。
このような虫による被害を避けるため、基本的な対策は「衣服などで肌の露出を減らすこと」（角正さん）。長袖、長ズボンを着用し、サンダルなどは不可。肌を覆うことで植物によるかぶれや裂傷なども避けることができる。スズメバチの場合、黒いものを獣と思って追ってくるため、髪の毛を覆う帽子も忘れなずに。マダニの場合は侵入を避けるため、首にタオルや手ぬぐいを巻くのもいい。虫よけのスプレーなども有効だが、「スズメバチなどはにおいに敏感なため、付け過ぎると逆に攻撃を受けることもあります」（角正さん）。
◆海外旅行でも注意
海外旅行では日本には存在しない感染症を媒介する虫に注意が必要だ。蚊が媒介するマラリアとデング熱は感染例が多い。大阪検疫所（大阪市港区）検疫衛生課の江平俊治さんによると、日本のような非流行地からの渡航者は免疫がないため、発症リスクが高くなるという。マラリアとデング熱の発生はアジアや中南米、アフリカなどの熱帯、亜熱帯地域に広く分布。マラリアは近年、制圧に成功していた韓国やギリシャでも国内感染例が確認されているという。
感染を防ぐには、「肌の露出を控えることに加え、ディート（ＤＥＥＴ）などの有効成分が含まれる虫よけ剤を利用するといいでしょう。蚊取り線香も有効です」と江平さん。宿泊施設では、しっかりとした網戸が取り付けられているか確認する。マラリアを媒介する蚊は夜行性、デング熱を媒介する蚊は昼間に活動するため、発生例のある国ではその時間帯の野外活動には特に注意する。
江平さんは「マラリアもデング熱も感染から数日後に症状が出ます。帰国後、異常が出たら空港の検疫所に相談するか、渡航先を告げて医療機関で受診してほしい」と呼び掛けている。
■虫よけ剤「ディート」 子供へは使用制限
厚生労働省は皮膚に使う虫よけ剤の成分として有効とされるディート（ＤＥＥＴ）について、安全面から子供への使用に制限を設けている。同省は、６カ月未満の乳児には使用しない▽６カ月以上２歳未満は１日１回▽２歳以上１２歳未満は１日１～３回－としている。使用する際は注意書きを読み、大人の指導・監督のもとで使用するよう呼び掛けている。
６０代男性がマダニ感染症
岡山市は８日、岡山県備前保健所東備支所管内（備前、赤磐市、和気町）に住む６０代男性が、マダニが媒介する重症熱性血小板減少症候群（ＳＦＴＳ）に感染したと発表した。同県内での感染確認は４人目。
岡山市によると、男性は３８度台の発熱や下痢などの症状があったが、現在は快方に向かっている。７月下旬に自宅近くの田んぼで草刈りをした際にマダニに刺され、感染した可能性があるという。
男性は今月１日、同市の病院を受診、入院した。左肩と左太ももの計２カ所にマダニが刺したような跡があり、血小板の減少などＳＦＴＳ感染が疑われる症状も見られたため、同病院が市保健所に連絡。国立感染症研究所（東京）の血液検査でウイルスが確認された。
厚生労働省によると、国内ではこれまで８６人が感染し、うち３０人の死亡を確認。県内では昨年７月に８０代女性が死亡している。
マダニは春から秋にかけて活動が活発になるため、同市保健管理課は「野山に入る際は肌の露出を避け、帰宅後すぐにシャワーで体を洗うなど予防に努めてほしい」としている。
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