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Appl. Environ. Microbiol., Sep 1997, 3374-3377, Vol 63, No. 9
N van der Mee-Marquet, M Loessner and A Audurier
The purpose of our study was to evaluate the inclusion of seven
experimental phages into the international phage set for subtyping Listeria
monocytogenes. The seven additional phages included the broad- host-range
virulent Myoviridae phage A511 (M. J. Loessner, Appl. Environ. Microbiol.
57:1912-1918, 1991), three temperate phages from the Danish subsystem for
typing serotype 1/2 strains (12682, 6223, and 5775) (P. Gerner-Smidt, V.T.
Rosdahl, and W. Frederiksen, APMIS 101:160- 167, 1993), and three temperate
phages isolated by this laboratory in France (9425, 1313, and 197). A panel
of 395 Listeria monocytogenes isolates (including 180 that were non-phage
typeable by the international set) were used in the study for a comparison
of the lytic spectra of the various bacteriophages. These results showed
that the inclusion of five of the experimental phages contributed greatly
to the overall typeability and discriminatory power of the system,
especially for strains within serogroup 1/2.
Copyright © 1997, American Society for Microbiology
Evaluation of seven experimental phages for inclusion in the international phage set for the epidemiological typing of Listeria monocytogenes
Laboratoire de Microbiologie, Faculte de Medecine, Tours, France.
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