Table 5.

Follow up results in ten participants. First detection, after 3 months of the first detection (second detection) and after 1 month of the second detection (third detection)

Student ID	First detection		Second detection		Third detection
	c.f.u. per gram of faeces*	E. coli antibiotic resistance profile†	c.f.u. per gram of faeces*	E. coli antibiotic resistance profile†	c.f.u. per gram of faeces*	E. coli antibiotic resistance profile†
1	4.0×106	Without resistance	9.2×106	Without resistance	2.4×108	Without resistance
4	2.3×107	Without resistance	1.1×108	Without resistance	5.3×106	Without resistance
25	1.4×106	Without resistance	2.6×105	Without resistance	1.5×105	Without resistance
29	5.2×106	Without resistance	6.1×107	Without resistance	5.2×106	Without resistance
3	1.5×107	TE | tetA	1.7×107	Without resistance	1.3×106	Without resistance
6	4.9×107	AML | bla TEM	1.6×107	Without resistance	1.7×106	Without resistance
15	3.3×107	AML | bla TEM AML	7.1×107	Without resistance	7.9×107	AML‡ AML‡
28	4.8×105	AML‡	1.1×107	AML‡ Without resistance	8.3×106	Without resistance
2	3.3×108	AML, TE, SXT, C | bla TEM, tetA, sul3 AML, TE | bla TEM, tetA	9.7×105	AML, TE, SXT| blaTEM, tetA, sul1 Without resistance	1.0×108	AML, TE, SXT | bla TEM, tetA, sul1, sul2
12	7.9×107	AML | bla TEM	1.5×108	AML, TE, CIP, CN SXT | bla TEM, tetB, parC, gyrA, aac(3)-II, sul1, sul2, sul3 TE | tetB	1.0×108	AML, TE, CIP, CN SXT | bla TEM, tetB, parC, gyrA, aac(3)-II, sul1, sul3

*Only Gram-negative bacteria were counted.

†From two E. coli isolates randomly selected from each student. When only one profile is presented, this means that both E. coli isolates are the same, phenotypic and molecular.

‡Isolates with intermediate resistance.

AML, amoxicillin; CTX, cefotaxime; TE, tetracycline; SXT, trimethoprim-sulfamethoxazole; CIP, ciprofloxacin; CN, gentamicin; C, chloramphenicol