Respiratory Infections
Respiratory infections in small mammals, reptiles, and birds encompass a range of bacterial, viral, and fungal pathogens affecting the upper and lower respiratory tract. In guinea pigs, Bordetella and Streptococcus are common. In reptiles, bacterial pneumonia is often secondary to husbandry issues. In birds, respiratory infections can rapidly become life-threatening.
Symptoms & Signs
- Nasal discharge
- Sneezing or wheezing
- Open-mouth breathing
- Labored breathing
- Clicking or crackling sounds
- Lethargy and appetite loss
- Eye discharge
- Tail bobbing (birds)
Causes & Risk Factors
Bacteria (Pasteurella, Bordetella, Mycoplasma in small mammals; Pseudomonas, Aeromonas in reptiles), viruses (Sendai virus in rats), fungi (Aspergillus in birds). Predisposing factors: poor ventilation, dusty bedding, temperature extremes, overcrowding, stress, and immunosuppression.
Diagnosis
Physical examination and auscultation. Radiographs or CT for lower respiratory involvement. Culture and sensitivity of nasal/tracheal swabs. Blood work for systemic assessment. PCR for specific pathogens.
Treatment
Appropriate antibiotics based on culture (enrofloxacin, trimethoprim-sulfa, azithromycin). Nebulization therapy. Supportive care (fluids, nutrition, warmth). Environmental correction. Antifungals for mycotic infections.
Prevention
Proper ventilation and clean environment. Appropriate temperature and humidity. Dust-free bedding (paper-based for small mammals). Quarantine new animals. Avoid overcrowding. Reduce stress.
Prognosis
Good if caught early and treated appropriately. Chronic infections in guinea pigs (Bordetella) can be difficult to eliminate. Reptile pneumonia requires correction of husbandry for resolution. Bird respiratory infections can be rapidly fatal without treatment.
Affected Breeds (7)
| Breed | Species | Size |
|---|---|---|
| Siamese | Cat | Medium |
| Campbell's Dwarf Hamster | Small Mammal | Tiny |
| Chinese Hamster | Small Mammal | Tiny |
| Dwarf Winter White Hamster | Small Mammal | Tiny |
| Lionhead Rabbit | Small Mammal | Small |
| Roborovski Hamster | Small Mammal | Tiny |
| Teddy Guinea Pig | Small Mammal | Small |