In vivo efficacy of fluoroquinolones against systemic tularaemia infection in mice
2005
with 1 · 10 6 cfu F. tularensis Schu S4 and observed for a period of 56 days. Results: Treatment initiated 6 h post-exposure resulted in 94, 100 and 100% survival for ciprofloxacin, gatifloxacin and moxifloxacin, respectively. When treatment was delayed until 24 h post-exposure the survival rates were ciprofloxacin 67%, gatifloxacin 96% and moxifloxacin 100%. Treatment initiated at 48 h post-exposure resulted in a significant reduction in the survival rate of the ciprofloxacin-treated mice, with 0% survival compared with 84 and 62% for gatifloxacin and moxifloxacin, respectively. Non-treated infected control mice died within 96 h post-exposure. Dexamethasone given at day 42 for 7 days to suppress the animals’ immune system caused relapse in all of the treatment groups.
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