Analysis of serotypes and electropherotypes of equine rotaviruses isolated in the United States.
Equine group A rotaviruses isolated over a 10-year period in New York State, New Jersey, Kentucky, and Texas were compared serotypically and electropherotypically. All isolates were determined to be serotype 3 by reaction with hyperimmune antiserum to the serotype 3 H-2 strain of equine rotavirus. All displayed RNA electrophoretic migration patterns related to that of the H-2 strain but distinct from that of serotype 5 strain H-1. A serologic survey of 184 mares in Kentucky, which was done to determine the incidence of H-1 and H-2 infections, showed geometric mean serum neutralizing titers to the H-2 strain of equine rotavirus to be significantly higher than those to the H-1 strain. These data suggest that the serotype 3 H-2 strain is the dominant equine rotavirus in Kentucky and perhaps elsewhere in the United States. We were unable to produce confirmational evidence that the H-1 strain occurs as a natural infection in the United States.
Hardy
M E
ME
Department of Veterinary Pathobiology, College of Veterinary Medicine, Texas A&M University, College Station 77843-4467.
Woode
G N
GN
Xu
Z C
ZC
Williams
J D
JD
Conner
M E
ME
Dwyer
R M
RM
Powell
D G
DG
D000818:Animals; D004591:Electrophoresis, Polyacrylamide Gel; D005260:Female; D006734:Horse Diseases / Q000382:microbiology; D006736:Horses / Q000382:microbiology*; D011247:Pregnancy; D012367:RNA, Viral / Q000235:genetics / Q000302:isolation & purification; D012401:Rotavirus / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D012400:Rotavirus Infections / Q000382:microbiology / Q000662:veterinary; D012703:Serotyping; D014481:United States
D012367:RNA, Viral