Etiologic studies on late-term swine abortions.
One hundred thirty-eight swine abortions were studied in detail in an effort to identify an etiologic agent. A viral agent was implicated in 7 cases. Bacteria were isolated in less than half of the examined cases: however, in 61% of the cases, motile, filamentous organisms were observed in tissues and fluids. Although swine sera from farms experiencing reproductive problems had a high reactor rate to Leptospira bratislava antigen, electron microscopy of the observed organism revealed a wall-free prokaryote morphologically typical of the class Mollicutes.
Nielsen
J N
JN
Indiana Animal Disease Diagnostic Laboratory, School of Veterinary Medicine, Purdue University, West Lafayette, IN 47907.
Armstrong
C H
CH
Turek
J J
JJ
Nielsen
N C
NC
D000034:Abortion, Veterinary / Q000382:microbiology*; D000818:Animals; D005260:Female; D005313:Fetal Death / Q000382:microbiology / Q000662:veterinary*; D005455:Fluorescent Antibody Technique; D008854:Microscopy, Electron; D011247:Pregnancy; D013144:Spirochaetales / Q000302:isolation & purification* / Q000648:ultrastructure; D013145:Spirochaetales Infections / Q000382:microbiology / Q000662:veterinary*; D013149:Spiroplasma / Q000302:isolation & purification / Q000648:ultrastructure; D013552:Swine; D013553:Swine Diseases / Q000382:microbiology*