Correction to: npj Biofilms Microbiomes https://doi.org/10.1038/s41522-020-00150-y, published online 9 October 2020

The original version of the published Article contained an error in the “Methods” section and the flow chart depicted in Fig. 3. The statistical test used should be a one sample t-test, and the alpha level 0.05. This has been corrected in the HTML and PDF version of the Article.