title: Comparison of conventional and reversed phage typing procedures for identification of Listeria spp.
abstract: Of 225 Listeria isolates evaluated, 199 had the same bacteriophage patterns by both the conventional (A. Audurier, A.G. Taylor, B. Carbonelle, and J. McLaughlin, Clin. Invest. Med. 7:229-232, 1984) and the new, easier to apply, "reversed" (M. J. Loessner, Appl. Environ. Microbiol. 57:882-884, 1991) phage typing procedures, 5 had different phage reactions, and the remaining 21 isolates were untypeable. Thus, the overall typeability rate was 90.7%, and 97.6% of the typeable isolates had the same phage patterns by both procedures.
authors.affiliation: Denver District Laboratory, Food and Drug Administration, Colorado 80225-0087.
authors.forename: L A
authors.initials: LA
authors.lastname: Estela
authors.forename: J N
authors.initials: JN
authors.lastname: Sofos
mesh_terms: D001434:Bacteriophage Typing / Q000379:methods*; D005516:Food Microbiology; D008089:Listeria monocytogenes / Q000145:classification / Q000302:isolation & purification*