Correction to: Microbiome (2021) 9:15
https://doi.org/10.1186/s40168-020-00954-2
Following publication of the original article [1], the authors identified an error in Fig. 3. The color highlights on the school IDs (X-axis tick label) and the cluster name for the four clusters were removed.
The correct figure is provided below.

The original article [1] has been corrected.
1.