Francisella Tularensis Colony Morphology

Gentamicin is a possible alternative and now considered as drug of choice.

Francisella tularensis colony morphology. No growth on mac scant to no growth on bap after 48 h. Colonies are opaque grey white butyrous with smooth and shiny surface. Properties of francisella tularensis. Scant or no growth on bap.

Tiny grey white opaque colonies 1 2 mm 48hr. Positive negative francisella tularensis not ruled out. Once this organism is suspected on the basis of clinical and or laboratory information do not perform additional testing. The pneumonic form of the disease occurs rarely but is the likely form of.

Tularensis is highly infectious. Tularensis is a fastidious organism and requires cysteine. In this study a modified himar1 transposon himarft was used to mutagenize f. Aerobic fastidious does not require co 2.

Tiny gram negative coccobacilli faintly staining colony morphology. Greenish blue colonies 2 4 mm 48h. No growth on mac or emb. In humans ulceroglandular tularemia is the most common form of the disease and is usually a consequence of a bite from an arthropod vector which has previously fed on an infected animal.

Francisella tularensis colony characteristics. 48h bap 48h choc. Streptomycin is the drug of choice. Produces 1 2 mm gray to grayish white colonies on choc after 48 h.

Tularensis can grow on chocolate agar or buffered charcoal yeast extract bcye agar media supplemented with cysteine. Tularensis is currently classified as category a agent of bioterrorism. Francisella tularensis the etiologic agent of tularemia in humans is a potential biological threat due to its low infectious dose and multiple routes of entry. Because of the highly infectious nature f.

Slow growing on choc tm or bcye. May grow on pri mary culture not well on subculture. Summary francisella tularensis is the etiological agent of tularemia a serious and occasionally fatal disease of humans and animals. Laboratory diagnosis treatment and prevention of francisella tularensis.

Tularensis replicates within several cell types eventually causing cell death by inducing apoptosis. Francisella tularensis rule out evaluation f. 1 2 mm after 48h. They are capsuled catalase ve faintly stained gram negative bacteria etc.

Francisella tularensis major characteristics of francisella tularensis gram stain morphology. Colonies are butyrous and smooth gram stain. Colonies are described on the basis of size shape texture elevation pigmentation and effect on growth medium. Cysteine heart agar cha.

Francisella tularensis colony morphology aerobic fastidious requires cysteine for growth grows poorly on blood agar ba chocolate agar ca. Biochemical test of francisella tularensis subsp. In this blog post you will find common criteria that are used to characterize the bacterial growth.