TABLE 2.

Effect of wash time on the reduction of Shigella flexneri on the hands

TestWash time (s)Treatment (no. of subjects)Log10 count/hand (95% CI)
BaselineaSingle-wash reduction
115Antimicrobial (8)6.16 (6.03-6.29)2.90 (2.40-3.40)b,c
Nonantimicrobial (8)6.13 (6.04-6.22)1.72 (1.56-1.88)b,d
230Antimicrobial (10)5.99 (5.89-6.09)3.33 (3.04-3.62)b,c
Nonantimicrobial (10)5.97 (5.81-6.13)1.67 (1.43-1.89)b,d
  • a P > 0.5 (ANOVA; antimicrobial baseline versus nonantimicrobial baseline within each test).

  • b P < 0.001 (ANOVA; single wash; antimicrobial versus nonantimicrobial soap within each test).

  • c P = 0.086 (ANOVA; antimicrobial soap; test 1 versus test 2).

  • d P > 0.6 (ANOVA; nonantimicrobial soap; test 1 versus test 2).