RT Book, Section A1 Riedel, Stefan A1 Hobden, Jeffery A. A1 Miller, Steve A1 Morse, Stephen A. A1 Mietzner, Timothy A. A1 Detrick, Barbara A1 Mitchell, Thomas G. A1 Sakanari, Judy A. A1 Hotez, Peter A1 Mejia, Rojelio SR Print(0) ID 1163280225 T1 Haemophilus, Bordetella, Brucella, and Francisella T2 Jawetz, Melnick, & Adelberg's Medical Microbiology, 28e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9781260012026 LK accessmedicine.mhmedical.com/content.aspx?aid=1163280225 RD 2024/04/23 AB This is a group of small, Gram-negative, pleomorphic bacteria that require enriched media, usually containing blood or its derivatives, for isolation. Haemophilus influenzae is a major human pathogen; Haemophilus ducreyi, a sexually transmitted pathogen, causes chancroid; six other Haemophilus species are among the normal microbiota of mucous membranes and only occasionally cause human disease. Haemophilus aphrophilus and Haemophilus paraphrophilus have been combined into a single new species Aggregatibacter aphrophilus; likewise, Haemophilus segnis is now a member of the Aggregatibacter genus (Table 18-1).