Isolation of a previously undescribed rickettsia from an aborted bovine fetus.
A previously undescribed obligate intracellular bacterium was isolated from an aborted bovine fetus. The organism was resistant to penicillin, replicated within cytoplasmic vacuoles, exhibited structural characteristics compatible with the rickettsias, and shared antigenic determinants with Cowdria ruminantium.
Washington Animal Disease Diagnostic Laboratory, College of Veterinary Medicine, Washington State University, Pullman 99164.
P M
PM
Dilbeck
J F
JF
Evermann
T B
TB
Crawford
A C
AC
Ward
C W
CW
Leathers
C J
CJ
Holland
C A
CA
Mebus
L L
LL
Logan
F R
FR
Rurangirwa
T C
TC
McGuire
D000034:Abortion, Veterinary / Q000382:microbiology*; D000818:Animals; D002417:Cattle / Q000382:microbiology*; D002418:Cattle Diseases / Q000382:microbiology*; D005260:Female; D005333:Fetus / Q000382:microbiology*; D005455:Fluorescent Antibody Technique; D011247:Pregnancy; D012281:Rickettsia / Q000276:immunology / Q000302:isolation & purification* / Q000472:pathogenicity