Comparison of a complement resistance test, a chicken embryo lethality test, and the chicken lethality test for determining virulence of avian Escherichia coli.
Results with four pathogenic avian Escherichia coli isolates and one avirulent isolate in a complement resistance test, a chicken lethality test, and a chicken embryo lethality test were compared. Results of the complement resistance test with these isolates were highly correlated to results of the chicken lethality test of virulence. The chicken embryo test yielded results that were of a medium positive correlation with the chicken lethality results. The results of the complement resistance and chicken embryo lethality tests were highly correlated.
Nolan
L K
LK
Department of Medical Microbiology, College of Veterinary Medicine, University of Georgia, Athens 30602.
Wooley
R E
RE
Brown
J
J
Spears
K R
KR
Dickerson
H W
HW
Dekich
M
M
D000818:Animals; D001681:Biological Assay; D002642:Chick Embryo; D002645:Chickens; D003165:Complement System Proteins / Q000276:immunology*; D004926:Escherichia coli / Q000145:classification / Q000472:pathogenicity*; D004927:Escherichia coli Infections / Q000382:microbiology / Q000662:veterinary*; D011201:Poultry Diseases / Q000382:microbiology*; D012703:Serotyping; D014774:Virulence
D003165:Complement System Proteins