Infection with Pasteurella Multocida, Pasteurellosis (Bacterial Infection Caused by Pasteurella Species) in cats
- Occurrence: common
- Location of illness: General/Whole body
Pasteurellosis is a bacterial infection in cats, caused by the bacterium Pasteurella multocida, which is often found in the normal oral flora of cats but can cause infections under certain conditions. Pasteurella multocida is a Gram-negative, coccobacillary bacterium that belongs to the normal flora of the upper respiratory tract and digestive tract of many animals, including cats. It is known for its ability to cause opportunistic infections, especially when the host’s immune system is weakened or when injuries occur that facilitate the entry of the bacteria. The infection often occurs in conjunction with bite or scratch injuries, as the bacteria are easily transmitted through the saliva of cats. It can cause Skin infections and, in more severe cases, lead to systemic infections. Pasteurella multocida is an opportunistic pathogen, meaning it is usually harmless but can cause an infection under certain conditions, such as stress or an existing illness. The normal protective barrier of the skin or mucous membranes can be weakened by injuries, which facilitates the entry of the bacteria into the body. Further factors that increase the risk of infection include a weakened immune system, chronic diseases, or other existing infections that impair the body’s natural defenses. Since cats are social animals that frequently interact and fight, they are particularly susceptible to bite and scratch injuries, which provide an entry point for the bacteria.
The most important facts at a glance
Pasteurella multocida is a bacteria commonly found in the mouths of cats and can cause infections, especially through bite or scratch injuries. The infection can also occur as a secondary consequence of existing Wounds or respiratory diseases. Common symptoms include nasal and ocular discharge, Respiratory distress, Abscess formation, reddened conjunctiva, and inflamed ear canals. The diagnosis is based on clinical symptoms, medical history, and laboratory tests, with samples from infected areas being examined in the laboratory. Blood tests and imaging procedures can also contribute to the diagnosis. Therapy includes the administration of antibiotics such as amoxicillin or clindamycin, as well as cleaning the infected areas. In severe cases, surgical intervention may be necessary. Supportive measures such as a balanced diet promote recovery. The prognosis depends on the severity of the infection and timely treatment, with superficial infections usually healing well. For prevention, bite and scratch injuries should be avoided by creating a calm environment and monitoring the socialization of cats. Regular veterinary examinations and good hygiene, including cleaning cat utensils and immediate Wound care, are also important to reduce the risk of infection.
Causes
Bite injuries, as the bacteria are found in the mouths of many animals, including cats.
Scratch wounds from infected animals.
Secondary infections in existing Wounds or respiratory diseases.
Symptoms
The symptoms of a Pasteurella infection in cats can vary depending on the severity and location of the infection. In a superficial Skin infection, which often occurs after a bite or scratch, redness, Swelling, pain, and Pus formation are observed. The affected area can also be warm and sensitive.
If the infection penetrates deeper tissues or spreads systemically, more serious signs may appear, such as Fever, loss of appetite, and lethargy. In some cases, the infection can affect the respiratory tract, leading to Respiratory distress, Cough, and nasal discharge.
In very rare cases, Pasteurella multocida can lead to a severe systemic infection, which can be life-threatening. This systemic Pasteurellosis can be characterized by bacteremia (bacteria in the blood), which constitutes a medical emergency. Symptoms can include high Fever, shock, and multiple organ failure.
Diagnosis
The diagnosis of a Pasteurella infection is based on a combination of clinical symptoms, medical history, and laboratory tests. A veterinarian will first take the cat’s medical history, especially whether there have been recent bite or scratch injuries.
An accurate diagnosis is supported by microbiological examinations, in which samples are taken from the infected site and examined for the presence of Pasteurella multocida. These samples can be cultured in the laboratory to isolate and identify the bacteria.
Additionally, blood tests can be performed to determine the extent of the infection and rule out other possible causes for the symptoms. In severe cases where a systemic infection is suspected, X-rays or ultrasound examinations may be necessary to assess the spread of the infection.
Therapy
The therapy for Pasteurellosis in cats usually requires the administration of antibiotics to kill the bacteria. Commonly used antibiotics include amoxicillin, clindamycin, or enrofloxacin, which are selected by the veterinarian based on the sensitivity of the isolated bacteria.
In addition to medical therapy, it is important to keep the affected area clean and to remove any pus or dead tissue to promote healing. In severe cases, surgical intervention may be necessary to drain Abscesses or remove infected tissue.
Supporting the cat’s immune system through a balanced diet and, if necessary, nutritional supplements can also contribute to recovery. For systemic infections, more intensive treatment, including intravenous fluid administration and hospitalization, may be necessary.
Prognosis and follow-up care
The prognosis for cats with a Pasteurella infection depends on the severity of the infection and timely treatment. Superficial Skin infections usually heal well with timely and appropriate treatment. Most cats recover completely without long-term consequences.
For deeper or systemic infections, recovery may take longer, and there is a higher risk of complications. Early diagnosis and treatment are crucial to improve the prognosis and reduce the risk of complications.
Untreated or inadequately treated, Pasteurellosis can lead to serious health problems, including the possibility of sepsis, which can be life-threatening. Therefore, it is important to seek veterinary help immediately if an infection is suspected.
Prevention
The prevention of a Pasteurella multocida infection in cats begins with minimizing situations where bite or scratch injuries can occur. This can be achieved by promoting a calm and stress-free environment where conflicts between cats are avoided. It is important to closely monitor the socialization and behavior of cats, especially in multi-cat households.
Regular veterinary examinations are also crucial to monitor the cat’s general health and identify potential sources of infection early. If possible, cats should be kept indoors to minimize Contact with unfamiliar animals that may be carriers of the bacteria.
Good hygiene is another important prevention factor. This includes regular cleaning of cat utensils such as food bowls and litter boxes, as well as frequent hand washing after handling cats or their excretions. In case of injuries, whether from bites or scratches, the Wound should be cleaned immediately with soap and water to reduce the risk of infection.
By combining these measures, the risk of Pasteurellosis infection in cats can be significantly reduced, leading to better health and increased well-being for the animals.
When to visit the vet?
Non-urgent see a veterinarian within 2–3 days