Department of Infectious Diseases, Israel Institute for Biological Research, Ness-Ziona, Israel.
Virology Laboratory, Rambam Health Care Campus, Haifa, Israel.
Int J Infect Dis. 2022 May;118:211-213. doi: 10.1016/j.ijid.2022.03.001. Epub 2022 Mar 5.
SARS-CoV-2 Omicron strain emergence raised concerns that its enhanced infectivity is partly due to altered spread/contamination modalities. We therefore sampled high-contact surfaces and air in close proximity to patients who were verified as infected with the Omicron strain, using identical protocols applied to sample patients positive to the original or Alpha strains. Cumulatively, for all 3 strains, viral RNA was detected in 90 of 168 surfaces and 6 of 49 air samples (mean cycle threshold [Ct]=35.2±2.5). No infective virus was identified. No significant differences in prevalence were found between strains.
新冠病毒变异株奥密克戎的出现引发了人们的担忧，即其增强的传染性部分归因于传播/污染方式的改变。因此，我们使用相同的方案来采样与已确诊感染奥密克戎变异株患者密切接触的高接触表面和空气，这些方案也同样适用于采样感染原始或阿尔法变异株的患者。累计来看，在所有 3 种变异株中，在 168 个表面样本中的 90 个和 49 个空气样本中的 6 个（Ct 值均值=35.2±2.5）中检测到了病毒 RNA。未鉴定到有感染性的病毒。在不同变异株之间，其流行率没有显著差异。
