Citrobacter freundii Enterobacter aerogenes Enterobacter cloacae Escherichia coli* Haemophilus influenzae* Haemophilus parainfluenzae Klebsiella oxytoca Klebsiella pneumoniae* Moraxella catarrhalis* Morganella morganii Proteus mirabilis* Proteus vulgaris Serratia marcescens Anaerobes: