<prompt> Organism causing IV biofilm?Staph epidermisAcinetobacter baumanniiMeningococciMycobacterium  <response>: Ref: Harrisons, 19th ed. pg. 145e-4 Many bacterial, fungal, and protozoal species have the ability to grow in multicellular masses called biofilms. These masses are biochemically and morphologically quite distinct from the free-living individual cells referred to as planktonic cells. Growth in biofilms leads to altered microbial metabolism, production of extracellular virulence factors, and decreased susceptibility to antimicrobial agents, biocides, and host defense molecules and cells. Examples of bacterial organisms forming biofilm: P. aeruginosa, staphylococci and other pathogens growing on implanted medical devices, and dental pathogens growing on tooth surfaces to form plaque S. epidermis - on Prosthetic valve, IV catheter Strep Mutanssanguinis - on Dental plaques Pseudomonas - Cystic fibrosis, contact lens Strep, viridans - Endocarditis Non-typable H. influenza Otitis. Media 