Aeromonas Infections in Aquatic Habitats

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Questions and Answers

What are the growth characteristics of Francisella species?

Fastidious aerobes that prefer to grow in glucose-cysteine-blood agar, older cultures show pleomorphism

What is the reservoir of infection for Francisella species?

Rabbits and rodents

What is the etiologic agent of Tularemia?

F.tularensis

What are the virulence factors of Francisella species?

Capsular lipids Signup and view all the answers

How can Hemophilus species be identified in the laboratory?

Organisms require one or both of two growth factors (porphyrins or nicotinamide as X factor) and adenine dinucleotide (NAD, NADP) as V factor Signup and view all the answers

What is Glasser’s Disease and its etiologic agent?

Swine influenza of swine caused by H.parasuis Signup and view all the answers

What are the main species of Aeromonas associated with animal infections?

The main Aeromonas species associated with animal infections are A.hydrophila, A.salmincida, and A.shigelloides. Signup and view all the answers

What are the key morphology, staining features, and cellular composition of Aeromonas species?

Aeromonas species are Gram-negative, short, plump aerobic rods. Signup and view all the answers

What are the key growth characteristics of Aeromonas species?

Aeromonas species grow well in trypticase soy agar at 22-25°C and produce heavy turbidity in broth. Signup and view all the answers

What are the main reservoirs of Aeromonas infection?

The main reservoirs of Aeromonas infection are the stools, bile, and throat of avian, cattle, swine, and dogs, as well as the feces and dysenteric stool of swine and dogs. Signup and view all the answers

What are the key virulence factors of Aeromonas species?

The key virulence factors of Aeromonas species are adhesins and enterotoxins. Signup and view all the answers

What are the recommended treatments and control/prevention measures for Aeromonas infections?

The recommended treatment is oxytetracycline (60-75 mg/kg for 21 days). Control and prevention measures include obtaining fish and eggs from disease-free sources and ensuring stress reduction through well-aerated clean water and good nutrition. Signup and view all the answers