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  Discussion on Piroplasmosis in 3 horses in S. New Mexico
Author Message
Moderator:
DrO

Posted on Wednesday, Jan 6, 2010 - 1:42 pm:

On 15 December 2009, NVSL confirmed equine piroplasmosis (Theileria equi) in three horses in southern New Mexico. None of the T. equi positive horses showed clinical signs of disease. The T. equi positive horses were detected as a result of New Mexico’s equine piroplasmosis race track screening programme (over 1,300 animals have been screened for equine piroplasmosis).

Other Information:
  • Date of start of the outbreak Dec/15/2009
  • Outbreak status: continuing
  • Epidemiological unit: Farm
  • Preliminary results of the investigation indicate that the transmission of the organism may have resulted from management practices (use of shared needles or substances between horses) rather than by a tick vector.
  • All equine cohorts of the T. equi positive horses have tested negative for equine piroplasmosis.
  • The New Mexico detections are not epidemiologically linked to the Texas equine piroplasmosis outbreak.
  • All T. equi positive horses are under isolated quarantine.
  • Testing of all epidemiologically linked horses is ongoing.


Control Measures so far:
  • Control of arthropods
  • Quarantine
  • Disinfection of infected premises/establishment(s)
  • Dipping / Spraying
  • Vaccination prohibited
  • No treatment of affected animals
Member:
vickiann

Posted on Wednesday, Jan 6, 2010 - 3:54 pm:

Thanks Dr. O. This is very interesting. Do you think they control just the biting arthropods?

Do you know the reasons why that "Vaccination prohibited" and "No treatment of affected animals"
are used as control methods?
Moderator:
DrO

Posted on Wednesday, Jan 6, 2010 - 8:08 pm:

Vicki, I think they are still thinking about what to do about this, more will follow. You can read more about treatment and vaccination in the article (which explains some of the reasons for the current status).
DrO
Member:
vickiann

Posted on Thursday, Jan 7, 2010 - 10:36 am:

Thanks Dr. O.

Very interesting.
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