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Haemophilus Influenzae (Frequently Asked Questions)
Haemophilus influenzae (H. influenzae) is a Gram-negative coccobacillus which was first identified in 1892. Some strains of H. influenzae have a polysaccharide (carbohydrate) capsule (outer covering).
In the laboratory, Hib infection can be diagnosed by the detection of Hib bacteria from sterile body fluids such as blood or CSF using culture and gram stain. A test called slide agglutination is used to identify the H. influenzae serotypes. Polymerase chain reaction (PCR) can be used for the detection and confirmation of serotypes.
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