Which organism is most likely to be isolated from a subcutaneous abscess in a cat?

The organism most likely to be isolated from a subcutaneous abscess in a cat is Pasteurella multocida. This bacterium is commonly associated with bite wounds, particularly those from cats, and is often found in their oral flora. When a cat bites another animal or even a human, Pasteurella multocida can enter through the skin and lead to an abscess, which is characterized by inflammation and accumulation of pus.

In veterinary practice, it is important to consider the specific pathogens that can be associated with different wound types, and Pasteurella multocida is one of the most notable in cases involving feline bites or scratches. It is a fastidious organism that can be difficult to culture without specific media, but it is a common isolate in abscess-related scenarios in cats.

While other organisms listed may also be associated with abscesses or infections in different contexts, Pasteurella multocida is particularly linked to the specific conditions described. For instance, Escherichia coli could come from fecal contamination but is less commonly isolated in cat abscesses. Sporothrix schenckii is related to fungal infections and usually occurs in cases of sporotrichosis, particularly from plant materials. Staphylococcus intermed