Coliform bacteria

Coliform bacteria represent a broad functional group of Gram-negative, rod-shaped, non-spore-forming bacteria characterized by their ability to ferment lactose with the production of acid and gas (Source: EPA). This group encompasses several genera within the Enterobacteriaceae family, including Escherichia, Klebsiella, Enterobacter, and Citrobacter (Source: StatPearls). While many coliforms are commensal organisms inhabiting the gastrointestinal tracts of humans and animals, their presence in environmental samples is a primary indicator of fecal contamination and the potential presence of enteric pathogens (Source: WHO). In clinical settings, pathogenic strains of coliforms are major causes of community-acquired and nosocomial infections, such as urinary tract infections, neonatal meningitis, and sepsis (Source: NIH). Because coliform bacteria is a collective term for diverse organisms rather than a specific molecule, it is not a discrete therapeutic target in the traditional sense (Source: Merck Manual). Instead, antimicrobial agents target specific bacterial components like the cell wall, ribosomes, or DNA gyrase within these species to treat infections (Source: PubMed). The group is also significant in public health for monitoring water quality and food safety standards globally (Source: CDC). Therapeutic challenges include the rise of multi-drug resistant strains, such as those producing extended-spectrum beta-lactamases (Source: WHO).

Other names

Total coliformsFecal coliformsThermotolerant coliformsColiforms

Antibiotics targeting coliform bacteria act through various mechanisms including inhibition of cell wall synthesis (beta-lactams), inhibition of protein synthesis (aminoglycosides), and inhibition of DNA replication (fluoroquinolones) (Source: Merck Manual).