Bacterial genotype affects the manifestation and persistence of bovine Staphylococcus aureus intramammary infection.
Two-hundred seventeen Staphylococcus aureus isolates from 116 dairy cows with intramammary infections were analyzed by pulsed-field gel electrophoresis to study the association between symptom severity, persistence of infection, and bacterial genotype. Among five main genotypes infecting 90% of the cows, one was associated with severe clinical symptoms but reduced persistence.
Haveri
M
M
Department of Veterinary Clinical Sciences, Faculty of Veterinary Medicine, P.O. Box 57, FIN-00014 University of Helsinki, Finland. maarit.haveri@helsinki.fi
Taponen
S
S
Vuopio-Varkila
J
J
Salmenlinna
S
S
Pyörälä
S
S
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000382:microbiology / Q000503:physiopathology; D003612:Dairying; D016521:Electrophoresis, Gel, Pulsed-Field; D005260:Female; D005838:Genotype; D008414:Mastitis, Bovine / Q000382:microbiology* / Q000503:physiopathology*; D008892:Milk / Q000382:microbiology; D012720:Severity of Illness Index; D013203:Staphylococcal Infections / Q000382:microbiology / Q000503:physiopathology / Q000662:veterinary*; D013211:Staphylococcus aureus / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification / Q000472:pathogenicity; D014774:Virulence