Survival of bacillus licheniformis on human skin.

摘要: The colonization and survival of Bacillus species, members the cutaneous microbial community humans, were investigated by applying spores licheniformis to forearms volunteers. Four strains tested, including bacitracin producer ATCC 10716 its bacitracin-negative mutant. Germination occurred within 24 h. Significant differences in population duration found among test strains; however, mutant produced statistically similar curves. In general, an inoculum density 10(4) colony-forming units per cm2 allowed for at least 2 weeks. Individual variation was extreme, one subject harbored bacilli over months another eliminated microorganism 3 days. Individuals could be differentiated into long-term (greater than 21 days) short-term (less 14 carriers. Eight 11 volunteers (73%) inoculated with carried it weeks, 5 subjects (45%) continued support Spreading organism other regions body occurred, but not detected these areas beyond 6