Pasteurella derives its name from the French scientist Louis Pasteur (Pasteur→Pasteurella) and belongs to the Pasteurellaceae family. [1]
Pasteurella Multocida
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BrucellaÂ
Some clinically important members of the Brucella family include Brucella abortus, Brucella melitensis, Brucella canis and Brucella suis. [1]
Yersinia Pestis
The organism is known for causing plague/black death that resulted in millions of deaths in the past.
Reservoirs for Yersinia pestis include wild rodents, squirrels, prairie dogs, and city rats. [1,2]
Francisella TularensisÂ
Some subspecies of Francisella tularensis are the following [1]:
Subspecies tularensis (type A)-most virulent
Subspecies Holarctica (type B)
subsp. mediaasiatica
Legionella Pneumophila Â
Legionella pneumophila is a bacterium responsible for Legionnaires’ disease, a severe form of pneumonia. It is commonly found in freshwater environments but can proliferate in man-made water systems like cooling towers, hot tubs, and plumbing systems. Infection occurs when people inhale aerosolized water droplets containing the bacteria.
Haemophilus Influenzae
Unencapsulated strains of Haemophilus influenzae can be normally present in the human respiratory tract [1]. However, pathogenic strains can cause diseases in all age groups, from children to adults. Some notable diseases caused by H. influenzae in children include epiglottitis, meningitis, and septic arthritis [2].
Mycoplasma Pneumoniae
Mycoplasma pneumoniae is a pleomorphic free-living organism that belongs to the Mycoplasmataceae family [1]. It is also sometimes referred to as the Eaton agent, named so after the name of the researcher who initially isolated the organism [2].
Treponema pallidum
Treponema pallidum is a thin spirochete that is known for causing syphilis [1]. Other species of this group and the corresponding diseases they cause are the following [2]:
Treponema pallidum pertenue: yaws
Treponema pallidum endemicum: endemic syphilis
Treponema pallidum carateum: pinta
Borrelia
Some clinically important species of the Borrelia family include Borrelia burgdorferi and Borrelia recurrentis.
Chlamydia
Some clinically important members of the Chlamydiaceae family include Chlamydia trachomatis, Chlamydophila pneumoniae, and Chlamydophila psittaci [1].