Unit 2- Emerging Infections Flashcards
Bartonella
Aerobic, fastidious, gram negative, coccobacilli, motile, facultative intracellular, cats, opportunistic pathogen, cat flea transmission
Bartonella henselae Transmission
Cat fleas
Bartonella bacilliformis Transmission
Sand flies
Bartonella quintana Transmission
Body lice
Cat Scratch Fever
Swollen lymph nodes, new vessels, vesicular lesions, fever, fatigue
Cat Bartonellosis
Flea transmission, invade RBC, replicate and persist
Bartonella Virulence Factors
Multiple flagella, bartonella adhesin A, filamentous hemagglutinin, Trw system, Virb, IalAB proteins, and hemolysin
Bartonella Diagnosis
Warthrin starry stain, not stained by gram, false positive serological test in cats, histology, radiographs
Bartonella Control
Prevent cat scratches and bites, control fleas
Streptobacillus moniliformis
Filamentous, gram negative, non motile, facultative anerobe, bacilli, fastidious, in upper respiratory of rodents
Bacillary Streptobacillus
Pathogenic form
L Form Streptobacillus
Non pathogenic form lacking a cell wall
Rat Bite Fever
Streptobacillus moniliformis spread by rat bite or contact, fever, rash, joint pain, and abscess
S moniliformis Diagnosis
Enriched media, non hemolytic, L form colonies stained by Dienes stain, catalase negative, oxidase negative
S moniliformis Treatment
Surgical drainage
Chromobacterium violaceum
Gram negative, facultative anaerobe, rods, flagella, violacein, opportunistic pathogen causing fatal systemic disease
Violacein
violet pigment with antibiotic activity against gram positives
C violaceum Humans
Skin abscess and septicemia progresses to multiorgan abscess and pneumonia
C violaceum Horse
Pneumonia, lung nodules, liver and kidney lesions, CNS petechiae
C violaceum Dog
Skin necrosis
C violaceum Diagnosis
Violet colonies, almond smell, beta hemolysis, catalase positive, oxidase positive,
Ornithobacterium rhinotracheale
ORT, gram negative, non motile, microaerophilic, pleiomorphic rods, respiratory disease in birds
ORT Clinical Signs
Coughing, reduced weight gain, reduced egg production, air sacculitis, pneumonia, exudate
ORT Diagnosis
Small non hemolytic colonies, no growth on MacConkey, oxidase positive, catalase negative
Riemerella anatipestifer
Non spore forming, non motile, gram negative, rods, duck septicemia
R anatipestifer Symptoms
Nasal discharge, sneezing, leg paddling, head and neck tremors, incoordination, depression, green diarrhea
R anatipestifer Diagnosis
Small transparent colonies on blood or chocolate agar, no growth on MacConkey, catalase positive, oxidase positive
