Impact of Some Ecological Factors on Fecal Contamination of Drinking Water by Diarrheagenic Antibiotic-Resistant Escherichia coli in Zagazig City, Egypt

Table 1

PCR primer sequences, their related gene targets, and expected amplification products size.

Virulence genes	Primer sequence (5′-3′)	Product size (bp)
Heat labile toxin 1 (LT1)	F: TTACGGCGTTACTATCCTCTCTA	322
	R: CCATACTGATTGCCGCAAT
Heat stable toxin 1 (ST1)	F: CTTTCCCCTCTTTTTAGTCAG	175
	R: TAACATGGAGCACAGGCAGG
Shiga like toxin 1 (stx1)	F: CTGCCGGACACATAGAAGGAAACT	267
	R: AGAGGGGATTTCGTACAACACTGG
Shiga like toxin 2 (stx2)	F: GGAGTTCAGTGGTAATACAATG	149
	R: GCGTCATCGTATACACAGG
Intimin (eae A)	F: GAAGCCAAAGCGCACAAGACT	413
	R: CTCCGCGGTTTTAGCAGACAC