Pasteurellosis
Learn what the condition is, how it may be detected early, how it is treated or managed, and which breeds or species are linked to it.
Condition snapshot
A concise guide to the condition’s pattern, detection, management and urgency.
Limit spread while seeking adviceSeparate affected animals when practical and obtain veterinary guidance on contacts, cleaning and normal mixing.
This snapshot is a general guide, not a diagnosis or treatment plan. New, severe or worsening signs require veterinary assessment.
About the condition
Pasteurella multocida commonly colonises rabbits and can also affect guinea pigs. Infection may remain subclinical or cause rhinitis, pneumonia, abscesses, ear disease, reproductive infection and septicaemia.
Nasal discharge, sneezing, matted forepaws, head tilt, facial swelling, breathing difficulty, infertility or sudden deterioration may occur. Carrier animals can relapse during stress.
Pasteurella multocida can colonise the upper airway of healthy rabbits and later contribute to rhinitis, pneumonia, middle-ear disease, abscesses, reproductive infection or septicaemia. A positive nasal culture therefore does not automatically prove it caused the current signs, and a negative superficial swab does not exclude infection in a closed abscess or middle ear. Stress, poor ventilation and concurrent disease can shift carriage toward illness. Thick white nasal discharge may mat the inside of the forepaws as rabbits groom. Extension through the tear duct, tooth roots, tympanic bulla or lungs creates different clinical syndromes requiring different treatment lengths and access. Guinea pigs can also be affected, but respiratory organisms and drug tolerances vary. Recurrent “snuffles” should not be managed as one uniform cold. Chronic carriers may relapse or transmit organisms while appearing normal, particularly in breeding or crowded groups.
Colonisation can remain confined to the upper airway or seed the middle ear, tear duct, lungs, skin, reproductive tract and bloodstream. That range explains why two rabbits exposed to the same strain can present with nasal discharge in one case and a head tilt or abscess in another. Stress may reveal disease without being its sole cause. Thick rabbit pus and poorly ventilated cavities permit infection to persist after visible discharge improves. A positive nasal result therefore describes exposure at that site, while prognosis depends on the organ actually affected. Apparent “snuffles” can therefore represent a multisystem disorder requiring different sampling and prognosis at each affected site.
Screening & Early Detection
Use quarantine, ventilation and low-stress group management. Do not breed animals with chronic respiratory or abscess disease. Recheck recurrent nasal or ear signs rather than repeatedly changing medication without diagnosis.
Culture and susceptibility testing from a deep sample is preferred, although prior antibiotics and upper-airway carriage complicate interpretation. Imaging is used for pneumonia, middle-ear infection and abscesses. Localise disease before sampling: examine nares, eyes, teeth, lungs, ears and reproductive tract as indicated. Obtain deep discharge, abscess wall, tracheal material or surgically collected bulla content for cytology and culture rather than relying on an unprepared nasal surface. Skull and chest imaging identify tooth-root, bulla, sinus or pulmonary involvement. Record previous antibiotics because they reduce culture yield and select resistance. Assess cage mates and quarantine history when disease clusters, but interpret healthy-carrier cultures cautiously.
Breathing difficulty, severe head tilt or systemic weakness requires rapid care. Map eye, ear, dental, respiratory and skin findings rather than treating every Pasteurella result as isolated rhinitis. Deep sampling is prioritised when a closed abscess or lower-airway lesion is present. Weight and breathing trends identify deterioration that a changing amount of nasal discharge may miss.
Treatment & Management
Long courses of species-safe antibiotics, drainage or excision of abscesses, pain relief and supportive nutrition may be required. Treatment controls but may not eliminate carriage.
Choose a rabbit- or species-safe antibiotic from susceptibility and the affected site, often for a prolonged course when bone, bulla or abscess is involved. Remove or marsupialise organised abscess material and address diseased teeth because poorly vascularised caseous pus limits drug penetration. Provide analgesia, fluids and assisted nutrition and monitor gastrointestinal function during therapy. Improve ventilation, reduce ammonia and avoid crowding. Treatment may control signs without eliminating upper-airway carriage, so breeding and mixing decisions should reflect recurrence history. Repeat imaging or deep sampling when discharge returns rather than rotating empirical drugs. Humane long-term planning is needed when chronic bulla, lung or multisite disease cannot be controlled comfortably.
Treatment length and drug penetration are matched to the infected site; bone, bulla and organised abscess disease require more than a short upper-airway course. Recurrence prompts imaging or source control rather than indefinite empirical refills. Household management reduces stress and secretion transfer without assuming every exposed healthy rabbit can be sterilised of carriage.
Breeds or species affected
Mini Lop
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Dwarf Lop
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Netherland Dwarf
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Dutch Rabbit
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Mini Rex
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Standard Rex
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English Spot
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Flemish Giant
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New Zealand White
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English Angora
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American Guinea Pig
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Abyssinian Guinea Pig
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Peruvian Guinea Pig
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Sheltie or Silkie Guinea Pig
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Teddy Guinea Pig
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Skinny Pig
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