Fig. 1: Distribution of tet(X)-positive bacterial strains.

a Distribution of tet(X)-positive clinical E. coli and K. pneumoniae strains in China. Dark blue background indicates provinces included in this surveillance; red star represents the province in which tet(X)-positive strains were isolated; light blue background indicates provinces in which no sample was collected. The map was created using Edraw Max v9.4. b Year of isolation of tet(X)-positive strains of specific bacterial species. The number of strains isolated each year is indicated.