Figure 2.

Number of species per group of isolates. Strains isolated at the same time (month and year) from the same type of specimen and recognized as having the same origin (nosocomial or community-acquired) were considered as belonging to the same group. Vertical lines show significant differences among the connected groups of strains (Wilcoxon fdr < 0.05); # = significant differences between the number of species in nosocomial and not-nosocomial groups from the corresponding specimen (Wilcoxon fdr < 0.05).