Link to Pubmed [PMID] – 11959602
Antimicrob. Agents Chemother. 2002 May;46(5):1571-3
Streptococcus pyogenes BM4478 and Staphylococcus aureus BM4479 were isolated from a patient undergoing rifampin therapy. High-level resistance to rifampin was due to the following mutations in the rpoB gene: Ser522Leu in strain BM4478 and His526Asn and Ser574Leu in strain BM4479.