What kind of infection is it? Chickenpox, a virus belonging to the human herpesvirus family The virus usually enters through the respiratory tract mucosa, multiplies in the nose, pharynx (throat) and lymph nodes, and then after 4 to 6 days, the virus multiplies in the blood. The virus then multiplies throughout the body, and after a two-week incubation period, chickenpox develops. After chickenpox has cleared up, the virus enters the sensory ganglia. How symptoms manifest After a latent period of about two weeks (10 to 21 days), papular blisters appear all over the body. The rash is accompanied by itching, erythema, The course of the disease is generally mild, but complications include secondary bacterial infection of the skin, pneumonia, Testing and diagnosisIt is usually diagnosed based on characteristic symptoms. It can also be diagnosed by confirming a significant increase in IgG antibodies in the blood during the acute and recovery phases, or by detecting IgM antibodies during the acute phase. Isolation of virus from blister contents, detection of varicella-zoster virus DNA by PCR, blisters Treatment methods Usually, phenol The prevention method is to avoid contact with infected people and to get the chickenpox vaccine. Even if you have been vaccinated, about 10-20% of people may develop chickenpox if they come into contact with a chickenpox patient, but in these cases, the chickenpox is very mild, with only a few rashes and often atypical. Receiving two doses of the vaccine will provide more reliable prevention. If you come into contact with a person with chickenpox, you can prevent the onset of the disease and reduce symptoms by receiving the chickenpox vaccine as soon as possible, at least within 72 hours. What to do if you notice an illnessPlease visit your pediatrician or, for adults, your regular internal medicine or dermatology clinic. Because it is highly contagious and remains contagious until all the rash has formed scabs, it is classified as a Type 2 infectious disease under the School Health and Safety Act, and children are prohibited from attending school or daycare until all the rash has formed scabs. Kaoruko Taya Chickenpox |
どんな感染症か ヒトヘルペスウイルス科に属する水痘 ウイルスは通常気道粘膜から侵入し、鼻や咽頭(のど)、リンパ節で増えたのち、4~6日経過すると血液中でウイルスが増えます。その後全身でウイルスが増え、約2週間の潜伏期を経て水痘として発症します。 水痘が治ったあとはウイルスが知覚神経節に 症状の現れ方 約2週間(10~21日)の潜伏期ののち、丘疹性の水疱が全身に現れます。発疹はかゆみを伴い、紅斑、 経過は一般的に軽症ですが、合併症として皮膚の二次性細菌感染、肺炎、 検査と診断通常は特徴的な症状から診断されることがほとんどです。急性期と回復期で血液中のIgG抗体の有意な上昇を確認するか、急性期にIgM抗体を検出することで診断されることもあります。 水疱内容からのウイルス分離、PCR法による水痘帯状疱疹ウイルスDNAの検出、水疱 治療の方法 通常、フェノール・ 予防法は感染源の人との接触をさけることと、水痘ワクチンを接種することです。水痘ワクチンは接種を受けても10~20%程度は水痘の患者さんと接触した場合に発症することがありますが、この場合の水痘は極めて軽症で発疹の数も少なく、非典型的であることが多いようです。2回の接種を受けておけば、より確実に予防できます。 水痘の患者さんと接触した場合はできるだけ早く、少なくとも72時間以内に水痘ワクチンを緊急接種することで、発症の防止、症状の軽症化が期待できます。 病気に気づいたらどうするかかりつけの小児科、成人の場合は内科あるいは皮膚科を受診してください。感染力が極めて強く、すべての発疹がかさぶたとなるまで感染力があるので、学校保健安全法では第二種の感染症に属し、すべての発疹が痂皮化するまで登校・登園停止となっています。 多屋 馨子 水痘(みずぼうそう)
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