TABLE 1.

Recovery of L. delbrueckii subsp. bulgaricus and S. thermophilus from fecal samples after yogurt ingestion

No. of detections per subjectaNo. of subjects whose feces contained viable yogurt strains
L. delbrueckii subsp. bulgaricusS. thermophilus
Trial 1
    Two10
    One50
    None410
Trial 2
    Two60
    One11
    None39
Total2020
  • a Two indicates detection of the microorganism on days 2 and 7, while one indicates that the strain was detected only on day 7.