We report here that nitazoxanide (NTZ) and its active metabolite kill replicating and nonreplicating M. tuberculosis at low microg/mL levels. NTZ appears to evade resistance, as we were unable to recover resistant colonies, using up to 10(12) colony forming units. Therefore, NTZ is a novel lead compound that kills replicating and nonreplicating M. tuberculosis by a novel mechanism of action, which appears to bypass the development of resistance.
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Carvalho et al. (2009) studied this question.
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