Characteristics of the most frequent strain types in the PubMLST database: many strain types are long-lived and globally widespread.

aNG refers to non-groupable isolates.
bThis ratio describes the proportion of disease and carried isolates found for each strain type as recorded in the PubMLST dataset. It should be noted that, as a result of the nature of the database, these ratios are not necessarily representative and should be interpreted with caution.