Serratia is a Gram-negative, rod-shaped bacteria found in various environments. Bacteria are typically 1-5 μm long and do not produce spores. Produces red pigment prodigiosin and unique enzymes DNase, lipase, and gelatinase
Gram-positive, round-shaped bacterium found in skin and respiratory tract. Can be both commensal and opportunistic pathogen. Estimated 20-30% of population carries it in normal flora. Can grow up to 10% salt on media
ECC is a common bacteria found in digestive tract. Six closely related species form the complex. Accounts for 65-75% of Enterobacter infections. Most common pathogen in hospitals
Klebsiella pneumoniae bacteria are normally harmless in intestines. Can become dangerous when entering other body parts. Risk increases with health conditions like diabetes and cancer. Transmitted through direct contact, mainly in hospitals
Enterococci are bacteria found in intestines of all animals. Only E. faecalis and E. faecium cause clinical human infections. Bacteria can survive extreme temperatures and survive in various environments
M. catarrhalis is a pink/brown, circular bacteria found in pairs. First reported in 1896 as Micrococcus catarrhalis, later renamed Moraxella. Two species exist: type 1 seroresistant (4 million years ago) and type 2 serosensitive (50 million years ago)