TY - JOUR
T1 - Acute recumbency associated with Anaplasma phagocytophilum infection in a horse
AU - Nolen-Walston, Rose D.
AU - D'oench, Sarah M.
AU - Hanelt, Lisa M.
AU - Sharkey, Leslie C.
AU - Paradis, Mary Rose
PY - 2004/6/15
Y1 - 2004/6/15
N2 - An 11-year-old Hanoverian-cross gelding was evaluated because of acute onset of ataxia, recumbency, and fever. At the stable, this and other horses had recently been infested with ticks. Results of analysis of a sample of CSF were within reference limits, but hematologic abnormalities included lymphopenia, thrombocytopenia, mild anemia, and intracytoplasmic inclusion bodies in neutrophils that were consistent with Anaplasma phagocytophilum (previously Ehrlichia equi). Results of serum biochemical analyses were characteristic of infection and included high, unconjugated bilirubin concentration. Other common causes of recumbency in horses, such as equine protozoal myeloencephalitis, infection with eastern or western equine encephalitis viruses and equine herpesvirus-1, West Nile viral encephalitis, trauma, and metabolic disease, were ruled out. The horse responded quickly to IV administration of oxytetracycline and recovered fully within 6 days.
AB - An 11-year-old Hanoverian-cross gelding was evaluated because of acute onset of ataxia, recumbency, and fever. At the stable, this and other horses had recently been infested with ticks. Results of analysis of a sample of CSF were within reference limits, but hematologic abnormalities included lymphopenia, thrombocytopenia, mild anemia, and intracytoplasmic inclusion bodies in neutrophils that were consistent with Anaplasma phagocytophilum (previously Ehrlichia equi). Results of serum biochemical analyses were characteristic of infection and included high, unconjugated bilirubin concentration. Other common causes of recumbency in horses, such as equine protozoal myeloencephalitis, infection with eastern or western equine encephalitis viruses and equine herpesvirus-1, West Nile viral encephalitis, trauma, and metabolic disease, were ruled out. The horse responded quickly to IV administration of oxytetracycline and recovered fully within 6 days.
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U2 - 10.2460/javma.2004.224.1964
DO - 10.2460/javma.2004.224.1964
M3 - Article
C2 - 15230452
AN - SCOPUS:2942621933
SN - 0003-1488
VL - 224
SP - 1964-1966+1931
JO - Journal of the American Veterinary Medical Association
JF - Journal of the American Veterinary Medical Association
IS - 12
ER -