Chloramphenicol combined with ampicillin in treatment of typhoid.

Fifty out of 100 patients with typhoid fever, matched for age, stage of illness, and degree of fever, were treated with chloramphenicol and the other 50 were treated with chloramphenicol combined with ampicillin. The febrile period was shortened by up to 29% in patients treated with the combined drugs compared with those given only chloramphenicol. Moreover, no patient on combined therapy had a febrile relapse, whereas two relapses occurred among patients treated with chloramphenicol only. We conclude that chloramphenicol and ampicillin together are better than chloramphenicol alone in the treatment of typhoid fever.