Francisella tularensis

Biochemical Test of Francisella tularensis subsp. tularensis

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Biochemical Test of Francisella tularensis

Biochemical Test of Francisella tularensis subsp. tularensis Image Source: New York State Health Department Some of the characteristics are as follows: Basic Characteristics Properties (Francisella tularensis subsp. tularensis) Capsule Positive (+ve) Catalase Positive (+ve) Flagella Negative (-ve) Gas Negative (-ve) Gelatin Hydrolysis Negative (-ve) Gram Staining Faintly stained Gram-negative H2S (in cysteine-supplemented medium) Positive (+ve) … Read more Biochemical Test of Francisella tularensis subsp. tularensis

Cystine Glucose Blood Agar

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Francisella tularensis on Cystine Glucose Blood Agar

Cystine Glucose Blood Agar Cystine Glucose Blood Agar is known as Cystine Heart Agar. Francis developed blood-dextrose-cystine agar after determining F. tularensis would only grow on an artificial medium supplemented with sulfhydryl compounds (i.e., cystine). F. tularensis is a fastidious organism and requires cysteine for best growth. To recognize the lifetime achievements of Francis in understanding … Read more Cystine Glucose Blood Agar

Laboratory Diagnosis, Treatment and Prevention of Francisella tularensis

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Laboratory diagnosis of Francisella tularensis

Laboratory diagnosis of Francisella tularensis Specimen Scrapings from infected ulcers, lymph node biopsies, and sputum, whole blood. Serum is generally collected from all patients early in disease and during convalescence. To minimize the loss of viable organisms, samples should be transported to the laboratory within 24 hours. If specimens are to be held longer than … Read more Laboratory Diagnosis, Treatment and Prevention of Francisella tularensis

Pathogenesis and Clinical manifestations of Francisella tularensis

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Pathogenesis and Clinical manifestations of Francisella tularensis

Pathogenesis of Francisella tularensis Francisella tularensis is carried by many species of wild rodents, rabbits, beavers. Humans become infected by handling the carcasses or skin of infected animals, by inhaling infective aerosols or ingesting contaminated water, through insect vectors and by being bitten by carnivores that have themselves eaten infected animals. Humans are infected by … Read more Pathogenesis and Clinical manifestations of Francisella tularensis