Salient features of Haemophilus vaginalis

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Abstract
A total of 78 strains of H. vaginalis were examined for 104 features. All strains fermented dextrin, maltose and starch. More than 90% of the strains fermented galactose, glucose and ribose. Arbutin, cellobiose, melibiose, rhamnose and salicin were not fermented by any of these strains. No strain acidified any of 14 alcohols or alkalinized any of 25 organic salts and amides. More then 90% of the strains hemolyzed human blood agar and hydrolyzed hippurate. No strain hemolyzed sheep blood agar. A recommendation is included for those minimal features that best differentiate H. vaginalis from other oxidase- and catalase-negative, gram-negative organisms.