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( ARTG ) Treatment of the following bacterial infections when caused by susceptible strains of the designated micro-organisms.‍​‍‍‍​‍‍‍‍‍‍‍‍​‍ Respiratory tract infections: Strep. pneumoniae and group A B-haemolytic streptococci. Although penicillin is the usual drug of choice in the treatment and prevention of streptococcal infections (including the prophylaxis of rheumatic fever), cephalexin is generally effective in the eradication of streptococci from the nasopharynx. Substantial data establishing the efficacy of cephalexin in the subsequent prevention of rheumatic fever are not available at present. Bacterial sinusitis: Streptococci, Strep. pneumoniae and Staph. Aureus (methicillin sensitive only). Otitis media: Strep. pneumoniae, staphylococci (methicillin sensitive only). Skin and skin structure infections: Staphylococci (methicillin sensitve only) and/or streptococci. Genitourinary tract infections, including acute prostatitis: E.coli, P.mirabilis, and Klebsiella sp. The effectiveness of cephalexin in the treatment of bacterial infections of the brain and spinal column has not been established and CEPHA RBX is not indicated in these conditions. Note. Appropriate culture and susceptibility tests should be initiated prior to and during therapy to determine susceptibility of the causative organism to CEPHA RBX. Renal function studies should be perfomed when indicated.