Fig. 1

The visually inspected colony growth colors corresponded with presumed Enterobacterales bacteria on selective CHROMID® ESBL agar plate (bioMerieux SA, France). (a) The result of pink color colonies on the upper part of CHROMID® ESBL agar (bioMerieux SA, France) demonstrated the ESBL-producing E. coli growth; (b) the result of blue/turquoise color colonies on the upper part of CHROMID® ESBL agar demonstrated the ESBL-producing K. pneumoniae growth. The lower part of both CHROMID® ESBL agar plates with no colony found demonstrated no ESBL-producing organism growth.