Table 2. Bacterium–antibiotic pairs classified by rate of resistance spread (n = 259 triads modelled as sigmoid).

Bacterium	Antibiotic class	Slow		Intermediate		Fast		Countries (n)
		n	%  of countries	n	%  of countries	n	%  of countries
Escherichia coli	Third-generation cephalosporins	13	46	8	29	7	25	28
	Quinolones	24	75	4	13	4	13	32
	Aminoglycosides	17	63	5	19	5	19	27
	Penicillins	8	57	4	29	2	14	14
	BL/BLI	5	50	2	20	3	30	10
Klebsiella pneumoniae	Third-generation cephalosporins	5	28	3	17	10	56	18
	Carbapenems	4	40	4	40	2	20	10
	Aminoglycosides	13	62	6	29	2	10	21
	BL/BLI	2	25	3	38	3	38	8
	Quinolones	4	31	5	38	4	31	13
Staphylococcus aureus	Oxacillin	1	13	6	75	1	13	8
	Rifampicin	2	33	2	33	2	33	6
Acinetobacter baumannii	Carbapenems	2	40	2	40	1	20	5
	Third-generation cephalosporins	0	0	3	75	1	25	4
Enterococcus faecium	Glycopeptides	3	50	2	33	1	17	6
	Aminoglycosides	2	33	2	33	2	33	6
	Penicillins	4	57	1	14	2	29	7
Pseudomonas aeruginosa	Carbapenems	2	22	7	78	0	0	9
	Piperacillin-tazobactam	4	44	2	22	3	33	9
	Quinolones	1	25	2	50	1	25	4
Streptococcus pneumoniae	Penicillins	4	67	2	33	0	0	6
	Macrolides	4	100	0	0	0	0	4
Enterobacter	Carbapenems	2	50	2	50	0	0	4

BL: beta-lactam; BLI: beta-lactamase inhibitor.