Interface Focus 12, 20210072. (Published 11 February 2022). (https://doi.org/10.1098/rsfs.2021.0072)
Please note the following correction. In §3 (page 2, right-hand column), the sentence 'Isolation of SARS-CoV-2 in cell culture was successful with two fine aerosol samples with a load estimated at greater than 104 RNA copies (one of which contained the alpha variant).' should read as follows:
Isolation of SARS-CoV-2 in cell culture was successful with two fine aerosol samples, one of which contained the alpha variant with a load estimated at greater than 104 RNA copies.