Wednesday, August 29, 2018

PRO/AH/EDR> Potomac horse fever, equine - USA (06): (KY)

POTOMAC HORSE FEVER, EQUINE - USA (06): (KENTUCKY)
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Date: Mon 27 Aug 2018
Source: EquiManagement [edited]
<https://equimanagement.com/news/kentucky-potomac-horse-fever-update>


According to the Kentucky State Veterinarian's Office, as of [25 Aug
2018], 26 cases of Potomac horse fever [PHF] have been confirmed in
Kentucky.

E.S. Rusty Ford, Equine Operations Consultant for the Kentucky State
Veterinarian's office, provided the following information.

The 1st confirmed case of Potomac horse fever (PHF) diagnosed in
Kentucky during calendar year 2018 was reported on [1 Jun 2018].
Through the week ending [25 Aug 2018], a total of 26 PHF cases have
been confirmed. Confirmation of each case was by PCR testing and
compatible clinical signs observed. A summary of the cumulative cases
is included in the table and graphics below. [Or may be seen on the
source website for this article - Mod.TG]

Historical Perspective
----------------------
Kentucky's PHF cases are 1st detected later in the year (mid-July),
and our thought is the early detection this year [2018] was most
probably associated with abundant wet weather in April and
record-breaking warm temperatures in May.

Horsemen are encouraged to review the environment in which their
horses are housed and consult with their veterinarians on strategies
they can use to mitigate disease risk. Minimizing opportunity for
horses to ingest aquatic insects by turning off lights in and around
barns and other areas at night has been suggested.

Potomac horse fever is described to be an acute enterocolitis syndrome
that presents as mild colic, fever and diarrhea in horses of all ages.
The resulting illness can also cause abortion in pregnant mares. The
causative agent, _Neorickettsia risticii_, is a gram-negative
bacterium. Infection of the large intestine results in an acute
colitis, which is one of the principal clinical signs of PHF.

While the disease is often associated with pastures bordering creeks
or rivers, it is believed most horses contract PHF after inadvertent
ingestion of aquatic insects carrying _N risticii_ and not the water
source.

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Communicated by:
ProMED-mail
<promed@promedmail.org>

[The source website has some wonderful maps, charts and graphs of
where these cases have occurred, including which counties and noting
that 20 of the 26 affected horses have survived and only 6 have
succumbed to this disease.

For more information on this disease, readers are encouraged to review
the moderator's comments in ProMED-mail archive no.
http://promedmail.org/post/20180729.5934327. - Mod.TG

HealthMap/ProMED map available at:
Kentucky, United States: <http://healthmap.org/promed/p/220>]

[See Also:
Potomac horse fever, equine - USA (05): (MD) alert
http://promedmail.org/post/20180810.5957977
Potomac horse fever, equine - USA (04) (KY)
http://promedmail.org/post/20180804.5948084
Potomac horse fever, equine - USA (03): (VA)
http://promedmail.org/post/20180729.5934327
Potomac horse fever, equine - USA (02): (TN)
http://promedmail.org/post/20180625.5873743
Potomac horse fever, equine - USA: (KY)
http://promedmail.org/post/20180605.5840854
2017
---
Potomac horse fever, equine - USA: (KY)
http://promedmail.org/post/20170813.5247748
2016
---
Potomac horse fever, equine - USA (03): (WV)
http://promedmail.org/post/20160923.4511391
Potomac horse fever, equine - USA (02): (MD)
http://promedmail.org/post/20160731.4383542
Potomac horse fever, equine - USA: (KY)
http://promedmail.org/post/20160707.4330954
2015
---
Potomac horse fever, equine - USA: (MD)
http://promedmail.org/post/20150801.3551062
and other items in the archives]
.................................................sb/tg/ao/dk
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