Evaluation of minocycline and cefuzonam for antimicrobial activity against clinical isolates

The Antibacterial activity of minocycline (MINO) and that of cefuzonam (CZON) were assessed with clinical isolates of 19 species, and compared with that of other antibiotics. MINO was highly active against methicilli-sensitive Staphylococcus aureus (MSSA), Neisseria gonorrhoeae, Moraxella (Branhamella) catarrhalis, Haemophilus influenzae, Helicobacter pylori, Flavobacterium meningosepticum, Acinetobacter calcoaceticus, Peptostreptococcus spp. and Propionibacterium acnes, but not as effective against methicillin-resistant Staphylococcus aureus (MRSA), Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis, Pseudomonas cepacia and Alcaligenes xylosoxidans. CZON was highly active against MSSA, Streptococcus pyogenes, Streptococcus agalactiae, Streptococcus pneumoniae, N. Gonorrhoeae, M(B). catarrhalis, H. influenzae, H. pylori, P. mirabilis, Peptostreptococcus spp. and P. acnes, but not effective against MRSA. It was minimally active against Gram-negative rods (E. coli, K. pneumoniae, etc.) and bacteria that do not ferment glucose.