Table. Levels of fecal indicators; fecal coliforms and somatic coliphages in the samples used in this study^a.

Samplea	Fecal coliforms (CFU/mL–1)b	Somatic coliphages (PFU/mL–1)b	Somatic coliphages in the purified fraction (PFU mL–1)c	blaOXA PCR	blaPSE PCR	Other bla genesd
Plant 1A (10 mL)	9.7 x 104 (2.2 x 104)	5.1 x 104 (3.6 x 103)	2.0 x 106	+e	+	–
Plant 1A (10 mL + CsCl)	9.7 x 104 (2.2 x 104)	5.1 x 104 (3.6 x 103)	7.5 x 104	+	+	–
Plant 1A (100 mL)	9.7 x 104 (2.2 x 104)	5.1 x 104 (3.6 x 103)	1.0 x 107	+	+	–
Plant 2A (10 mL)	9.2 x 104 (7.2 x 103)	5.1 x 104 (4.4 x 103)	1.3 x 106	+	+e	–
Plant 2A (10 mL + CsCl)	9.2 x 104 (7.2 x 103)	5.1 x 104 (4.4 x 103)	8.5 x 104	+	+	–
Plant 2A (10 mL)	9.2 x 104 (7.2 x 103)	5.1 x 104 (4.4 x 103)	1.3 x 106	+	+	–
Plant 2B (10 mL)	2.0 x 104 (9.6 x 103)	8.3 x 104 (4.6 x 103)	2.5 x 106	+	+	–
Plant 2C (10 mL)	9.0 x 104 (5.0 x 103)	6.2 x 104 (1.7 x 103)	1.5 x 106	+	+	–
Plant 3A (10 mL)	2.5 x 105 (6.0 x 104)	8.9 x 104 (3.0 x 103)	3.0 x 106	+	+	–
Plant 3B (10 mL)	3.0 x 105 (1.7 x 104)	9.3 x 104 (2.0 x 103)	2.5 x 106	+	+e	–
Poultry (10 mL)	1.8 x 106 (7.2 x 105)	7.9 x 104 (1.5 x 103)	1.0 x 106	+	+	–
Pigs (10 mL)	3.6 x 105 (1.3 x 105)	1.8 x 105 (1.7 x 104)	6.1 x 106	+	+e	–
Cattle (10 mL)	2.3 x 104 (7.2 x 103)	8.5 x 102 (2.7 x 102)	3.5 x 104	+	+	–

^aResults of nested polymerase chain reaction (PCR) amplification of the β-lactamases bla_OXA and bla_PSE. Parentheses indicate the protocol used (phage DNA obtained from 10 mL, 100 mL before purification or from 10 mL after CsCl purification).
^bArithmetic mean of three independent replicas. Standard deviation in parentheses.
^cBacteriophage enumeration of 10 mL of the purified fraction of the sample used for DNA extraction and PCR.
^dThe studied bla genes were: bla_TEM, bla_SHV, bla_CMY, bla_LAT, bla_MOX, bla_FOX, and bla_VIM genes family; bla_OXA-1-, bla_PSE-1-, bla_CTX-M-, and bla_OXA-2-related genes.
^eSequenced PCR fragments (see Figure).