To the best of our knowledge to date there are no scientific studies specifically investigating whether the SARS-CoV-2 virus is present in the air or on the various surfaces in the school environment. The aim of this study was to determine if SARS-CoV-2 is present on various high touch surfaces and in the air across the elementary, middle and high schools in the Chester County of Pennsylvania, USA. One hundred and fifty surface swab samples and 45 air samples were analysed for the presence of the virus. All the samples tested were negative for the presence of SARS-CoV-2. The results indicate that the spread of the virus through contact and through air in the school buildings across the USA is highly unlikely.

中文翻译：

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空气中和学校环境表面上不存在 SARS-CoV-2

迄今为止，据我们所知，尚无科学研究专门调查 SARS-CoV-2 病毒是否存在于空气中或学校环境的各种表面上。本研究的目的是确定 SARS-CoV-2 是否存在于美国宾夕法尼亚州切斯特县的小学、中学和高中的各种高接触表面和空气中。分析了 150 个表面拭子样本和 45 个空气样本中是否存在病毒。所有测试的样本都对 SARS-CoV-2 的存在呈阴性。结果表明，病毒通过接触和空气在美国各地校舍中传播的可能性很小。