Colonial morphology of Serratia marcescens grown on sheep's blood agar. Copyright holder: Pete Seidel. Link: https://phil.cdc.gov/Details.aspx?pid=12462.
Recognized by their red pigmentation the species Serratia marcescens have in recent years seen an increased presence in hospitals as an opportunistic pathogen infecting immunocompromised individuals and in neonatal ICUs [1, 2].
This heterogenous genus of Enterobacteriaceae inhabits various niches such as plants, water, soil and insect commensals, but Serratia marcescens is the member of the Serratia genus that has seen a larger increase as a hospital acquired infection (HAI) than other members of the genus.
Serratia marcescens displays intrinsic resistance to several antimicrobials such as macrolides, tetracyclines and β-lactams.
This intrinsic resistance in combination with the potential for acquiring more resistances through horizontal gene transfer make it important to keep track of Serratia marcescens .1928 offers a pipeline for tracking Serratia marcescens and predicting its resistance markers.
1928 offers the following analyses of S. marcescens: