Molecular epidemiology and population genetics of Salmonella subspecies diarizonae in sheep in Norway and Sweden.
Fifty-four isolates of Salmonella enterica subsp. diarizonae (IIIb) in Norway, Sweden, England, the United States, France and Australia were characterized by pulsed-field gel electrophoresis (PFGE). This study focuses on serovar 61:k:1,5,(7) [S. IIIb 61:k:1,5,(7)] isolated from sheep. Digestion of the bacterial DNA with restriction enzyme XhaI yielded 15 distinct PFGE profiles comprising 12-16 fragments in the range 48.5-630.5 kbp. Four different profiles were identified in Norwegian sheep isolates and a single profile in Swedish isolates. The spatial and temporal distribution of profiles is discussed.
Alvseike
O
O
The Norwegian School of Veterinary Science, P.O. Box 8146 Dep. 0173 Oslo, Norway.
Vardund
T
T
Lindstedt
B
B
Heir
E
E
Eriksson
E
E
Kapperud
G
G
D000818:Animals; D004269:DNA, Bacterial / Q000235:genetics; D016521:Electrophoresis, Gel, Pulsed-Field; D017720:Molecular Epidemiology; D012475:Salmonella / Q000235:genetics*; D012756:Sheep / Q000382:microbiology*
D004269:DNA, Bacterial