Which bacteria is indicated by a positive catalase and oxidase test alongside yellow pigment production?

The correct identification of Chryseobacterium meningosepticum is supported by its unique combination of a positive catalase test and a positive oxidase test, along with its characteristic yellow pigment production.

Chryseobacterium meningosepticum is a non-fermentative Gram-negative bacillus that can be distinguished in the laboratory by these biochemical tests. A positive catalase test indicates that the bacteria can produce the enzyme catalase, which breaks down hydrogen peroxide into water and oxygen, showing that the organism can tolerate oxidative stress. The positive oxidase test confirms the presence of cytochrome c oxidase, indicating that the bacteria can utilize oxygen as a part of its metabolic processes, which is also typical for several non-fermenters.

Furthermore, the yellow pigment production is an additional identifying characteristic of this species, setting it apart from other bacteria in similar environments.

This combination of factors is significant in identifying Chryseobacterium meningosepticum correctly, as other bacteria may share some traits but would not typically present all these characteristics together, especially the distinctive yellow pigmentation.