marginalisella

Marginalisella is a genus of bacteria from the family Enterobacteriaceae, first described in 2008. It is a Gram-negative, rod-shaped bacterium that is typically non-motile and non-spore-forming. Marginalisella species are opportunistic pathogens, meaning they can cause infections in individuals with weakened immune systems, such as those with diabetes, cancer, or those undergoing chemotherapy. The most commonly associated species is Marginalisella capri, which has been implicated in various infections, including urinary tract infections, wound infections, and bacteremia.

Marginalisella species are characterized by their ability to produce a yellow pigment, which is a diagnostic feature. They are also known for their resistance to certain antibiotics, including cephalosporins and fluoroquinolones. This antibiotic resistance is a significant concern in clinical settings, as it can complicate the treatment of infections caused by these bacteria.

The genus Marginalisella was initially classified within the family Enterobacteriaceae, but recent genomic studies have suggested that it may belong to a separate family, Marginalisellaceae. This classification is still under review and may change as more research is conducted.

In summary, Marginalisella is a genus of Gram-negative bacteria that are opportunistic pathogens, capable of causing various infections in immunocompromised individuals. They are characterized by their yellow pigment production and antibiotic resistance, which pose challenges in their clinical management.