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本文报道美国科罗拉多州雪山(休养地)一次胃肠炎流行中获得的一种 Norwalk 样病原体。流行期间,二周内至少有418名患者,其症状可为呕吐、腹泻和发热的不同组合。发病率高(56％),常由人与人之间散播,一般持续24～48小时而自动缓解。取5例患者发病后24小时内的粪便,经免疫电镜检查,在两份标本中发现27nm 病毒颗粒,其中一份作
This article reports a Norwalk-like pathogen obtained during a gastroenteritis epidemic in the snowy mountains of Colorado, Colorado. During the epidemic, there are at least 418 patients within two weeks, the symptoms of which can be different combinations of vomiting, diarrhea and fever. High incidence (56%), often spread from person to person, usually lasting 24 to 48 hours and automatically relieve. Take 5 patients within 24 hours after onset of stool, by immunoelectron microscopy, 27nm virus particles were found in two specimens, one of them for