1. Fishman NO, Suh B, Weigel LM, et al. Three levofloxacin treatment failures of pneumococcal respiratory tract infections. 39th Interscience Conference on Antimicrobial Agents and Chemotherapy; September 1999; San Francisco. Abstract 825.
2. Davidson RJ, DeAzavedo J, Bast D, et al. Levofloxacin treatment failure of pneumococcal pneumonia and development of resistance during therapy. 40th Interscience Conference on Antimicrobial Agents and Chemotherapy; September 2000; Toronto. Abstract 2103.
3. Urban C, Rahman N, Zhao X, et al. Fluoroquinolone-resistant Streptococcus pneumoniae associated with levofloxacin therapy. J Inf Dis (in press).
4. Superinfection with Streptococcus penumoniae during therapy with ciprofloxacin;Gordon;Am J Med,1990
5. Reflection & Reaction Infectious complications with respiratory pathogens despite ciprofloxacin therapy;Lee;N Eng J Med,1991