H. Ericsson et al., DIVISION INTO 5 GROUPS BY REA OF THE MOST FREQUENTLY ISOLATED PHAGOVAR OF LISTERIA-MONOCYTOGENES IN SWEDEN 1976-1985, Medical microbiology letters, 5(3), 1996, pp. 145-155
One hundred and seven strains of Listeria monocytogenes isolated from
human cases of listeriosis in Sweden during 1976-1985 were investigate
d. Sero- and phagetyping showed that 74 strains (69%) belonged to sero
var 4b and that 47 of these strains also shared phagovar 2389:2425:327
4:2671:47:108:340. Strains sharing this phagovar were further analyzed
by REA, and could accordingly be arranged into five REA groups. Howev
er, the majority of the 47 strains were distributed in two of the grou
ps. This indicates that two clones of L. monocytogenes were responsibl
e for a major part of the human cases of listeriosis in Sweden during
the ten-year period studied.