Table 3.
Aerobic bacterial culture, antimicrobial susceptibility testing, FHV-1 PCR results and response to antibiotic administration in 31 shelter cats with suspected bacterial upper respiratory infections
| Cat | FHV-1 PCR | Culture | Amp sensitivity | Azithro sensitivity | Drug 1 | Response | Drug 2 | Response |
|---|---|---|---|---|---|---|---|---|
| 614 | Pos | Mycoplasma species | ND | ND | Amox | Yes | NA | NA |
| P multocida | ||||||||
| Moraxella species | ||||||||
| Staph (coag neg) | ||||||||
| Strep (non-hemolytic) | ||||||||
| 604 | Pos | Mycoplasma species | ND | ND | Amox | Yes | NA | NA |
| P multocida | S | I | ||||||
| Moraxella species | S | S | ||||||
| Staph intermedius | S | S | ||||||
| Enterobacter species | R | R | ||||||
| 514 | Pos | Staph (coag neg) | ND | ND | Amox | Yes | NA | NA |
| Clostridium species | ND | ND | ||||||
| E coli | ND | ND | ||||||
| 782 | Pos | Mycoplasma species | ND | ND | Amox | Yes | NA | NA |
| P multocida | ND | ND | ||||||
| Strep B | ND | ND | ||||||
| 135 | Pos | Mycoplasma species | ND | ND | Amox | Yes | NA | NA |
| P multocida | ND | ND | ||||||
| Flavobacterium species | ND | ND | ||||||
| Strep B | ND | ND | ||||||
| 789 | Pos | Mycoplasma species | ND | ND | Azithro | Yes | NA | NA |
| P multocida | S | I | ||||||
| Flavobacterium species | S | S | ||||||
| Strep B | S | S | ||||||
| 799 | Pos | P dogmatis | S | I | Amox | Yes | NA | NA |
| Strep B | I | S | ||||||
| 000 | Pos | Mycoplasma species | ND | ND | Azithro | Yes | NA | NA |
| P multocida | S | I | ||||||
| Haemophilus species | ND | ND | ||||||
| 036 | Pos | Mycoplasma species | ND | ND | Amox | Yes | NA | NA |
| Flavobacterium species | ND | ND | ||||||
| P dogmatis | S | S | ||||||
| Bacillus species | ND | ND | ||||||
| 638 | Pos | Mycoplasma species | ND | ND | Amox | Yes | NA | NA |
| P multocida | S | S | ||||||
| Moraxella species | ND | ND | ||||||
| Staph (coag neg) | ND | ND | ||||||
| Strep B | ND | ND | ||||||
| Corynebacterium species | ND | ND | ||||||
| B bronchiseptica | ND | ND | ||||||
| 099 | Pos | NG | Azithro | Yes | NA | NA | ||
| 165 | Pos | P multocida | S | I | Amox | No-crossed | Azithro | No |
| Moraxella species | S | I | ||||||
| 890 | Pos | Mycoplasma species | ND | ND | Amox | No-crossed | Azithro | Yes |
| P multocida | S | I | ||||||
| 747 | Pos | Mycoplasma species | ND | ND | Azithro | No-crossed | Amox | Yes |
| P multocida | S | I | ||||||
| 409 | Pos | P multocida | S | I | Azithro | No-crossed | Amox | Yes |
| Moraxella species | ND | ND | ||||||
| Flavobacterium species | ND | ND | ||||||
| 416 | Pos | P multocida | S | I | Amox | No-crossed | Azithro | No |
| Moraxella species | S | S | ||||||
| Strep (non-hemolytic) | ND | ND | ||||||
| Simonsiella species | S | S | ||||||
| P dogmatis | S | I | ||||||
| 722 | Pos | Mycoplasma species | ND | ND | Amox | No-crossed | Azithro | Yes |
| Staph aureus | R | S | ||||||
| 504 | Pos | Mycoplasma species | ND | ND | Amox | No-crossed | Azithro | No |
| P multocida | S | I | ||||||
| Staph (coag neg) | ND | ND | ||||||
| Strep B | S | S | ||||||
| 937 | Neg | Mycoplasma species | ND | ND | Amox | No-crossed | Azithro | Yes |
| P multocida | S | I | ||||||
| Moraxella species | S | S | ||||||
| 774 | Pos | Mycoplasma species | ND | ND | Amox | No-crossed | Azithro | Yes |
| P multocida | S | I | ||||||
| Staph (coag neg) | ND | ND | ||||||
| Corynebacterium species | ND | ND | ||||||
| 104 | Pos | Mycoplasma species | ND | ND | Azithro | No-crossed | Amox | No |
| P multocida | S | I | ||||||
| Strep B | S | S | ||||||
| 004 | Neg | Mycoplasma species | ND | ND | Azithro | No-crossed | Amox | Yes |
| P multocida | S | S | ||||||
| Strep (non-hemolytic) | ND | ND | ||||||
| Flavobacterium species | S | I | ||||||
| Haemophilus species | S | S | ||||||
| 467 | Pos | P multocida | S | S | Amox | No-crossed | Azithro | No |
| Strep (non-hemolytic) | ND | ND | ||||||
| Flavobacterium species | S | I | ||||||
| 041 | Pos | Mycoplasma species | ND | ND | Amox | No-crossed | Azithro | Yes |
| P multocida | S | I | ||||||
| 628 | Pos | Mycoplasma species | ND | ND | Amox | No-crossed | Azithro | No |
| P multocida | S | S | ||||||
| Strep B | S | S | ||||||
| 359 | Pos | NG | Azithro | No-crossed | Amox | No | ||
| 058 | Pos | NG | Azithro | No-crossed | Amox | No | ||
| 635 | Pos | Mycoplasma species | ND | ND | Amox | No-removed | NA | NA |
| P multocida | ||||||||
| Moraxella species | ||||||||
| Staph (coag neg) | ||||||||
| Strep (non-hemolytic) | ||||||||
| 166 | Pos | Mycoplasma species | ND | ND | Amox | No-removed | NA | NA |
| P multocida | S | I | ||||||
| Moraxella species | S | S | ||||||
| Simonsiella species | ND | ND | ||||||
| 860 | Pos | Mycoplasma species | ND | ND | Amox | No-removed | NA | NA |
| P multocida | S | I | ||||||
| Moraxella species | S | S | ||||||
| Simonsiella species | ND | ND | ||||||
| 071 | Pos | P multocida | ND | ND | Azithro | No-removed | NA | NA |
| Flavobacterium species | ND | ND |
Cats were randomly placed on amoxycillin 22 mg/kgPO bid or azithromycin 15 mg/kgPO q 72 h. Cats that failed to respond to treatment were then placed on the other antibiotic. Culture and sensitivity results are pre-treatment results. Pos=positive; Neg=negative; NA=not applicable; amp=ampicillin; amox=amoxycillin; azithro=azithromycin; ND=not determined; S=susceptible; I=intermediate; R=resistant.