14. Family Legionellaceae Flashcards by Arvee Perez | Brainscape

Q

Legionella pneumophila serotype that is most common

A

Serotype 01

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Q

Oxygen requirements for L. pneumophila

A

Aerobic

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Q

Microscopic characteristics of L. pneumophila

A

Gram-negative bacilli

Difficult to stain

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Q

Oxidase reaction of L. pneumophila

A

Oxidase positive

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Q

Catalase reaction of L. pneumophila

A

Catalase positive

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Q

Enzyme produced by L. pneumophila

A

β-lactamase

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Q

Diseases caused by L. pneumophila

A

Legionnaire’s disease

Pontiac fever

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Q

Preffered specimen for L. pneumophila diagnosis

A

Respiratory specimen

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Q

Specimen for antigen testing for L. pneumophila

A

Urine

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Q

Is L. pneumophila intracellular/extracellular?

A

Intracellular.

Survives and multiplies within macrophages.

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Q

2 growth requirements for L. pneumophila

A

Cysteine

Iron

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Q

Media for growth of L. pneumophila

A

Buffered charcoal yeast extract (BCYE) media

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Q

Growth period of L. pneumophila

A

2 weeks

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Q

Confirmatory methods for L. pneumophila

A

Serology testing
DNA probes
Reference laboratory

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Q

Primary pathogen of the Family Legionellaceae

A

Legionella pneumophila

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