Haemophilus influenzae 1pm×0.3m gram-negative rods or coccobacilli PART 1 non-motile Biological non-spore-forming characteristics catalase: positive oxidase: positive facultatively Haemophilus infiuenzae anaerobic In cerebrospinal fluid some ot the cell may be elongated to several times their usual length(pleomorphic Medical MicrobiologyHaemophilus influenzae 1 µm × 0.3 µm gram-negative rods or coccobacilli non-motile non-spore-forming catalase: positive oxidase: positive facultatively anaerobic In cerebrospinal fluid some of the cell may be elongated to several times their usual length (pleomorphic). PART 1 Biological characteristics Medical Microbiology