Comment on

• Drug-resistant tuberculosis, clinical virulence, and the dominance of the Beijing strain family in Russia.

  Drobniewski F, Balabanova Y, Nikolayevsky V, Ruddy M, Kuznetzov S, Zakharova S, Melentyev A, Fedorin I. Drobniewski F, et al. JAMA. 2005 Jun 8;293(22):2726-31. doi: 10.1001/jama.293.22.2726. JAMA. 2005. PMID: 15941801
• Multidrug resistance among persons with tuberculosis in California, 1994-2003.

  Granich RM, Oh P, Lewis B, Porco TC, Flood J. Granich RM, et al. JAMA. 2005 Jun 8;293(22):2732-9. doi: 10.1001/jama.293.22.2732. JAMA. 2005. PMID: 15941802