P A Jenkins, I A Campbell, J Banks, et al. Clarithromycin vs ciprofloxacin as adjuncts to rifampicin and ethambutol in treating opportunist mycobacterial lung diseases and an assessment of Mycobacterium vaccae immunotherapy. Thorax 2008;63:627–34. There is an error in the abstract of this article. It should read as follows. A trial was undertaken to compare clarithromycin (Clari) and ciprofloxacin (Cipro) as third drugs added to 2 years of treatment with R and E for pulmonary disease caused by M avium-intracellulare (MAC), M malmoense and M xenopi (REClari and RECiprol).