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美国疾病控制中心有以下建议 :①呼吸道标本应尽早采集。因为一些呼吸道病原体经过一段时间可能会发生离析 ,从出现症状超过 72h收集的标本中病毒量明显减少。注意鼻咽及口咽拭子的采集 ,只能用塑料杆的无菌涤纶或人造丝拭子 ,不能用藻酸钙拭子或木杆棉拭子 (它们含有可能会使?
The United States Centers for Disease Control has the following recommendations: ① respiratory specimens should be collected as soon as possible. Because some respiratory pathogens may undergo segregation over a period of time, there is a significant reduction in the amount of virus in specimens collected more than 72 hours after the onset of symptoms. Note nasopharyngeal and oropharyngeal swab acquisition, only with plastic rods of sterile polyester or rayon swabs, can not use calcium alginate swabs or wood swabs (which may contain?