TABLE 1.

Characteristics of Enterobacteriaceae (one representative per lineage and sampling date) recovered from bivalve mollusks

Animal host	Sampling date	Batch no. (no. of pieces)	No. of positive tubes/total no. of tubesa	Isolate no.	No. of clonal isolates	Bacterial species	Phylogroup	Sequence typeb	Phenotype	ESBL/carbapenemase gene	ESBL-carrying plasmid	Plasmid subtype
Mussel	15 January 2015	1 (105)	21/21	40610	21	E. coli	A	ST617	ESBL	blaCTX-M-15	IncF	F31:A4:B1
	27 January 2015	2 (50)	2/10	40631	2	E. coli	A	ST617	ESBL	blaCTX-M-15	IncF	F31:A4:B1
	04 February 2015	3 (40)	2/8	40633	2	E. coli	B2	ST131	ESBL	blaCTX-M-27	IncF	F31:A4:B1
	07 March 2015	4 (110)	22/22	40637	20	E. coli	A	ST410	ESBL	blaCTX-M-15	IncF	F31:A4:B1
				40639	1	E. coli	A	ST88	ESBL	blaCTX-M-1	IncF	F18:A−:B1
				40656	1	K. pneumoniae		ST394	ESBL	blaCTX-M-15	IncF	Fk7:A−:B−
	25 March 2015	5 (95)	5/19	40660	2	K. pneumoniae		ST101	ESBL	blaCTX-M-15	IncF	Fk1:A−:B−
				40662	1	E. coli	A	ST10	ESBL	blaCTX-M-15	IncY
				40663	2	A. baumannii		ST2	Carba	blaOXA-23
Oyster	12 March 2016	1 (36)	3/36	43728	1	A. baumannii		ST2	Carba	blaOXA-23
				43729	1	E. coli	A	ST410	ESBL	blaCTX-M-15	IncF	F31:A4:B1
Scallop	14 April 2016	1 (30)	8/30	43731	8	E. coli	B2	ST131	ESBL	blaCTX-M-14	IncF	F29:A−:B10
	17 May 2016	2 (68)	8/68	43734	8	E. coli	A	ST617	ESBL	blaCTX-M-15	IncF	F31:A4:B1
	25 May 2016	3 (83)	10/83	43735	8	C. freundii		ND	ESBL	blaCTX-M-15	IncHI1
				43736	1	E. coli	A	ST617	ESBL	blaCTX-M-15	IncF	F31:A4:B1
				43737	1	E. coli	B1	ST155	ESBL	blaCTX-M-1	IncF	F18:A−:B1

^aFor mussels, each tube was a pool of five individuals. For oysters and scallops, each piece was analyzed individually.

^bST, sequence type; ND, not determined.