Fig. 2: Occurrence of three subclusters within the A. fumigatus population; clinical and environmental isolates were drawn from a single population.

a, Scatterplot of the PCA of A. fumigatus genotypes using the first two principal components illustrating genetic identity for clinical and environmental isolates. b, Discriminant PCA and PCA broadly identified three clusters, clusters 1–3, corresponding to the lowest BIC. c, Three subclusters were confirmed using STRUCTURE and k = 3.