Infectious agents in guinea pigs include: bacteria, viruses, fungi, and parasites.
Clinical symptoms include fever, coughing, dyspnea and in severe cases, hematoptysis and epistaxis.
Clinical signs associated with pneumonia include mucopurulent nasal discharge, sneezing, and labored breathing.
Diagnosis is based on presenting clinical signs, postmortem findings and culture of bacterial organisms. PCR assays may be required to determine viral particle presence.