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Actinomycetes

Actinomycetoma of the foot

Actinomycetes is a family of bacteria that form long branching filaments that resemble the hyphae of fungus. Actinomyces Israelii Transmission: …

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Mycobacterium Leprae

Mycobacterium leprae, small brick red rods

Mycobacterium leprae is an acid fast bacillus, non motile, non spore forming, straight or slightly curved bacterium, responsible for causing …

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Atypical Mycobacteria

Mycobacterium fortuitum

Atypical mycobacteria are also known as non-tuberculous mycobacteria, environmental mycobacteria or mycobacteria other than tuberculosis (MOTT). They are characterized as …

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Mycobacterium Tuberculosis

Mycobacterium tuberculosis

Mycobacterium tuberculosis is a non-motile, non-spore forming, non-encapsulated obligate aerobe. Under microscope, acid fast rods are observed. Pathogenesis: Transmission: Person …

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Pasteurella Multocida

Pasteurella multocida, depicted using Gram stain technique

Pasteurella multocida is a gram negative coccobacillus, which is non-motile and pencillin sensitive, responsible for causing zoonotic infections. Transmission: Pasteurella …

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Yersinia

Yersinia pestis

Yersinia are short, encapsulated, non motile gram negative rods. Transmission: Humans are the accidental hosts (bitten by a flea that …

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Francisella Tularensis

Francisella tularensis

Francisella tularensis is a species of gram negative rods, which are non motile, non-spore forming aerobic bacteria, responsible for causing …

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Brucella

Brucella melitensis

Brucella is a genus of gram negative, small, non-encapsulated coccobacilli which are strict aerobes. Route of entry Ingestion of contaminated …

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Legionella

Legionella species growing on agar plate illuminated using ultraviolet light to increase contrast.

Legionella is a genus of facultative anaerobic bacteria, which are gram negative rods. Route of entry •    Airborne droplets but …

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Bordetella

Bordetella bronchiseptica

Bordetella is a genus of gram negative coccobacilli, which are encapsulated. They are non-motile except B. bronchiseptica and are obligate …

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