Thiamphenicol and chloramphenicol: an in vitro comparison with particular reference to bactericidal activity.

Chloramphenicol is bacteristatic for most species but bactericidal for Haemophilus influenzae and Neisseria meningitidis. Despite its generally lower activity, thiamphenicol exhibited equal or greater activity against these two species than did chloramphenicol. It is suggested that a particular place might be defined for thiamphenicol in the treatment of infection due to these two organisms.