. 2018 Aug 27;62(9):e00851-18. doi: 10.1128/AAC.00851-18

TABLE 1.

Classification of BLNAS, low-BLNAR, and high-BLNAR isolates and their susceptibilities to β-lactams^a

Genotype	Group	No. of strains	MIC (mg/liter)
			Ampicillin				Ceftriaxone				Cefotaxime
			Geometric mean	MIC₅₀	MIC₉₀	Range	Geometric mean	MIC₅₀	MIC₉₀	Range	Geometric mean	MIC₅₀	MIC₉₀	Range
BLNAS		35	0.4	0.5	0.5	0.35–0.5	≤0.06	≤0.06	≤0.06	≤0.06–0.25	≤0.06	≤0.06	≤0.06	≤0.06–2
Low-BLNAR	II	5	1.15	1	2	0.5–2	≤0.06	≤0.06	≤0.06	≤0.06	≤0.06	≤0.06	≤0.06	≤0.06–0.25
High-BLNAR	III	47	3.77	4	8	2–16	0.28	0.25	1	≤0.06–1	1.34	2	4	≤0.06–8
High-BLNAR	III-like	9	5.44	8	16	2–16	0.16	0.25	0.25	≤0.06–0.5	2.59	4	8	0.25–8

Five BLPAR isolates and 2 BLPACR isolates possessed bla_TEM-1 and were excluded from this table. The PBP3 type of the BLPACR isolates was group III. The high-BLNAR isolate SMHi90 was excluded because of its unique ftsI sequence (see Fig. S1 and S2 in the supplemental material).