![]() Lymph nodes progress to encapsulated abscesses filled with yellow-white purulent exudate.ĭiagnosis is based on clinical signs and culture of the organism from lesions.Bite wounds or aerosol spread onto mucosal surfaces are the primary modes of transmission.Ĭervical lymph nodes become swollen, abscess and often rupture.The organism may be an asymptomatic inhabitant of the upper respiratory track that opportunistically invades damaged mucosa. Other Streptococcus spp and Streptobacillus moniliformis are rarely implicated. Cervical lymphadenitis is caused most commonly by Streptococcus zooepidemicus.Transmission of Streptococcus pneumoniae is by aerosol or direct contact with diseased or asymptomatic carrier guinea pigs, rats or humans Streptococcus pneumoniae. Otitis media, metritis and other suppurative processes may occur. Mortality is high Clinical signs are similar to those seen in other bacterial pneumonias. It may be accompanied by fibrinous pleuritis and bronchopneumonia. Fibrinopurulent pericarditis, shown here, can be caused by Streptococcus pneumoniae.Treatment of Bordetella bronchiseptica infection is often unrewarding.Īntibiotics of choice include chloramphenicol, sulfamethazine and trimethoprim-sulfa.Įffective prevention includes good husbandry and maintenance of a closed Bordetella free colony Bordatella.One may detect suppurative otitis media through radiographic examination of the tympanic bulla, as illustrated in this unilaterally affected animal ( arrow). Severe otitis media may be accompanied by head tilt ( torticollis). Otitis media may also occur with Bordetella infections.Typical histopathologic lesions of purulent bronchitis and bronchopneumonia with large accumulations of neutrophils and intraluminal debris ( arrow) are shown here Bronchopneumonia. Lesions includerhinitis, tracheitis and pulmonaryconsolidation.Transmission between animals is by direct contact, aerosol, or contaminated fomites Bordetella. Incidence of Bordetella bronchiseptica infection in guinea pigs may be high because many animal species such as rabbits, dogs and cats carry the organism in nonclinical infections.įor this reason, rabbits and guinea pigs should not be housed together. Bordetella bronchiseptica is a small gram negative rod. ![]() Pneumonic lungs, seen here as the dark-colored tissue, may have one or more areas of consolidation and hemorrhage.īordetella bronchiseptica, Streptococcus pneumoniae, or other bacteria frequently cause pneumonia in guinea pigs.Īffected animals may have no clinical signs, or exhibit nasal discharge, sneezing, dyspnea, weight loss, or sudden death Bordatella.Other infectious agents act as opportunistic invaders in traumatized tissue ( Streptococcus zooepidemicus), and contribute to enteric disease ( Clostridium piliforme and Salmonella spp) and dermatitis (Trichophyton mentagrophytes). Several primary respiratory diseases of the guinea pig are of bacterial origin, with Bordetella bronchiseptica and Streptococcus pneumoniae being the most important.Bacterial and fungal agents are responsible for some of the most significant diseases of guinea pigs BACTERIAL AND FUNGAL DISEASES.Antibiotics may suppress clinical signs but usually do not eliminate the organism and fatal antibiotic-induced enterocolitis is always a concern in treating guinea pigs.Īntibiotics implicated include penicillin, aminoglycoside, erythromycin, clindamycin, lincomycin, chlonetracycline, estreptomycin, bacitracin, and dihydrostreptomycin.Antibiotics may suppress clinical signs but usually do not eliminate the organism and fatal antibiotic-induced enterocolitis is always a concern in treating guinea pigs.
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