Animal Bite II Flashcards
Bartonella henselae General
Small, aerobic pleomorphic, short gram – rod, facultative intracellular
Bartonella henselae Animal Bite
Saliva of cats
Bartonella henselae Clinical
CAT SCRATCH DISEASE: regional lymphadenitis after a papule at a cat scratch site, UNILATERAL REGIONAL LYMPHADENITIS (#1 cause), benign and self limiting disease
Bartonella henselae Lab findings
Difficult to culture and gram stain
WARTHIN-STARRY SILVER STAIN
Bartonella henselae Dx/ Treatment
Dx based on history and physical findings, negative studies for other causes, histopathology of lymph node biopsy, no Culture
Bartonella Bacilliformis? General
Small, aerobic pleomorphic, short gram
Bartonella Bacilliformis? Animal Bite
Sand fly
Bartonella Bacilliformis? Clinical
Oroya Fever: acute febrile infection with severe anemia in Peru, Ecuador, Columbia
Bartonella Quintana General
Small, aerobic pleomorphic, short gram
Bartonella Quintana Clinical
Trench Fever: severe HA, fever, bone pain, endocarditis and bacilliary angiomatosis in immune compromised
Bartonella Clarridgeiae? General
Small, aerobic pleomorphic, short gram
Bartonella Clarridgeiae? Clinical
Endocarditis, cat scratch disease
Bartonella Elizabethae? General
Small, aerobic pleomorphic, short gram
Bartonella Elizabethae? Clinical
Endocarditis
Streptobacillus moniliformis General
Aerobic, gram neg bacillus, pleomorphic (bead string), fastidious
Streptobacillus moniliformis Animal Bite
Oropharynx of rodents (rats)
Streptobacillus moniliformis Clinical
Minimal local inflammation, prompt healing, little lymphadenitis
Rat Bite fever: septic fever, petechial rash, polyarthritis, HA, N/V, anemia, pneumonia
Often confused with RMSF
Streptobacillus moniliformis Dx
Slow growth can be cultured in vitro
Dx: culture of blood
Spirillum Minor General
Gram neg bacillus
Small, spiral shape, DARTING MOTILITY
Spirillum Minor Animal Bite
Oropharynx of rodents
Spirillum Minor Clinical
Long incubation period, recurrent fever, less prominent rash, common in Asia
Rat bite fever
Lymphagitis, Lymphadenopathy
Spirillum Minor Treatment/Dx
Dx: dark field prep of blood smears or tissue or from pus or adjacent lymph nodes
-Giemsa’s or Wrights stain
Rhabdovirus (Rabies) General
ssRNA virus
Bullet shaped
Rhabdovirus (Rabies) Animal Bites
Zoonotic, racoons, skunks, BATS, dogs, cats, cattle etc.
Rhabdovirus (Rabies) Clinical
Infection of skeletal muscle then travel to CNS
Furious rabies: aggressive behavior, agitation, confusion, excessive salvation, hydrophobia
Dumb rabies: weakness, inability to swallow/choke
Rhabdovirus (Rabies) Dx/Treatment
Post mortem: antigen detection in brain, presence of Negri bodies
Prophylaxis and post exposure therapy
