Table 1. The prevalence of cfxA genes in the β-lactamase-producing oral anaerobic bacteria.

β-lactamase gene (n=85)	Genus	Total no. of	No. of isolates with cfxA genes (%)
		positive isolates (%)	cfxA2	cfxA3	cfxA6
cfxA	Prevotella spp	21	14	4	3
	Porphyromonas spp	4	3	-	1
	Bacteroides spp	12	10	2	-
	Fusobacterium spp	2	2	-	-
	Clostridium spp	2	2	-	-
	Propionobacterium spp	2	2	-	-
Total		43 (50.6)	33 (76.7)	6 (14)	4 (9.3)
BlaTEM	As above	0	-	-	-