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An outbreak of legionellosis in a nursery

机译：苗圃中的军队爆发爆发

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We experienced an outbreak of legionellosis in infants for the first time in Japan. In Fukushima Prefecture Wakamatsu Nursery, the patients who had respiratory symptoms of cough, wheeze and fever appeared one after another from the middle of June, 2002. We suspected that an outbreak of legionellosis had occurred and then carried out urinary antigen detection of Legionella pneumophila. As a result, 8 patients were positive. They consisted of 5 boys and 3 girls, and ranged in age from 11 months to 1 year 10 months. Underlying disease was observed in one patient, and 6 patients were hospitalized. All 8 patients had rhinorrhea, cough, fever and 7 patients had wheeze. The average duration of cough was 9.9 days and that of fever was 4.5 days. In the admitted 6 patients, WBC ranged in count from 7,500/microliter to 15,300/microliter and CRP ranged from 0.2 mg/dl to 2.5 mg/dl. Chest X-rays showed infiltrative shadows (right lower lobe, left lower lobe) in 2 patients. With regard to the treatment, macrolide or tetracycline antibiotics were administered in 4 of 8 patients, and beta-lactams were administered in others. Water samples were obtained from 12 locations at the nursery, including the shower head of the bathroom, the bathtub, the taps, the laundry and so on. But cultures of water samples failed to grow legionella. We suspected that the source of infection was the humidifiers or the nebulizer used for disinfection. Through this outbreak, it became obvious that the mild case of legionellosis really existed. Furthermore, we suggested that it was possible for the patient with mild legionellosis to cure without administration of macrolide or tetracycline antibiotics.
机译：我们在日本第一次经历了婴幼儿的爆发。在福岛县Wakamatsu苗圃中，患有呼吸道症状的呼吸症状，喘息和发烧的患者纷纷出现在2002年代中期之后。我们怀疑发生了爆发的军团体病程，然后进行了军团菌肺炎的尿抗原检测。结果，8名患者是阳性的。他们包括5名男孩和3个女孩，岁月从11个月到1年10个月。在一个患者中观察到潜在的疾病，6例患者住院治疗。所有8名患者患有鼻子，咳嗽，发热，7名患者患有喘息。咳嗽的平均持续时间为9.9天，发烧的持续时间为4.5天。在入院6例患者中，WBC计数从7,500 /微升至15,300 /微升，CRP范围为0.2mg / d1至2.5mg / dl。胸部X射线显示2例患者渗透阴影（右下叶，左下叶）。关于处理，在8名患者的4例中给予大环内酯或四环素抗生素，并在其他患者中施用β-内酰胺。水样从苗圃的12个地点获得，包括浴室，浴缸，水龙头，洗衣机的淋浴头等。但水样的培养物未能生长军团菌。我们怀疑感染源是用于消毒的加湿器或雾化器。通过这种爆发，显而易见的是，军队的温和病例确实存在。此外，我们建议患者可以治愈轻度的军装，而不会施用大环内酯或四环素抗生素。

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