Cats

 
Usual Pathogens
Polymicrobial:

Pasteurella spp
Streptococcus spp
Staphylococcus spp/MRSA
Anaerobes
Neisseria spp
Moraxella spp
Corynebacterium spp
Enterococcus spp
Bacillus spp
Bergeyella spp

 
Rare:

Bartonella spp
Francisella tularensis
Yersinia pestis
Sporothrix schenckii

Prophylaxis

Infection rate up to 80%. Prophylaxis (ideally within 12h of bite) is recommended if:

  • moderate/severe
  • edema, pre-existing or resultant
  • puncture wounds
  • bone/joint involvement
  • injuries to hand, foot, face, genitalia
  • asplenic patients
  • advanced liver disease
  • immunocompromised.
Empiric Therapy

Dose

Duration
Amoxicillin-clavulanate 40mg/kg/d PO div tid 3-5 days

Alternative

Empiric Therapy

Dose

Duration
Cefuroxime axetil 30mg/kg/d PO div bid 3-5 days
+/-    
Metronidazole 15-30mg/kg/d PO div bid  

ß-lactam allergy ≤ 8 years old

Empiric Therapy

Dose

Duration
Clindamycin 20mg/kg/d PO div tid 3-5 days
+    
TMP/SMX (if > 1 month old) 8-12mg TMP/kg/d PO div bid  

ß-lactam allergy > 8 years old

Empiric Therapy

Dose

Duration
Doxycycline 2-4mg/kg/d PO div q12-24h 3-5 days
+/-    
Metronidazole 15-30mg/kg/d PO div bid  

Treatment

Empiric Therapy

Dose

Duration
Amoxicillin-clavulanate 40mg/kg/d PO div tid 7-10 days

Alternative

Empiric Therapy

Dose

Duration
Cefuroxime axetil 30mg/kg/d PO div bid

7-10 days

+/-    
Metronidazole 15-30mg/kg/d PO div bid  

ß-lactam allergy ≤ 8 years old

Empiric Therapy

Dose

Duration
Clindamycin 20-40mg/kg/d PO div tid

7-10 days

+    
TMP/SMX (if > 1 month old) 8-12mg TMP/kg/d PO div bid  

ß-lactam allergy > 8 years old

Empiric Therapy

Dose

Duration
Doxycycline 2-4mg/kg/d PO div q12-24h

7-10 days

+/-    
Metronidazole 15-30mg/kg/d PO div bid  

Severe/Limb-threatening

Empiric Therapy Dose Duration
Piperacillin-tazobactam 240-300mg piperacillin/kg/d IV div q6-8h 10-14 days
or    
Imipenem 60mg/kg/d IV div q6h 10-14 days