TABLE 1.

Total vancomycin-resistant Lactobacillus count in the feces of five healthy volunteers fed L. paracasei IMPC2.1 (LMG P-22043)-containing olives and recovery of the strain identified by PCR

Day of samplinga	Subject no.	Lactobacillus spp.b (CFU g−1, wet wt)	No. of colonies on platec	No. of L. paracasei IMPC2.1 colonies/no. analyzed
0	1	7.0 × 104	6 × 103	0/2
	2	2.7 × 107	24 × 105	0/3
	3	1.6 × 106	11 × 104	0/2
	4	1.8 × 107	16 × 105	0/3
	5	1.1 × 106	10 × 104	0/3
10	1	3.1 × 106	24 × 104	3/5
	2	5.7 × 108	26 × 107	1/3
	3	5.1 × 105	47 × 103	1/4
	4	6.7 × 106	21 × 104	1/3
	5	8.3 × 105	15 × 104	0/3
17	1	5.2 × 105	48 × 103	0/5
	2	4.5 × 106	7 × 105	1/2
	3	3.3 × 105	26 × 103	n.a.d
	4	5.7 × 105	43 × 103	n.a.
	5	2.0 × 106	13 × 104	0/3

^aDay 0, before consumption; day 10, end of consumption; day 17, 1 week after end of consumption. The daily dose (total CFU) was 3.1 × 10¹⁰ CFU (subjects 1 and 2) or 4.0 × 10⁹ CFU (subjects 3, 4, and 5).

^bVancomycin resistant.

^cNumber of colonies × dilution factor.

^dn.a., not analyzed.