Published Date: 2000-06-30 23:50:00
Subject: PRO/AH> Theileria annulata, cattle - UK (03): OIE confirmed
Archive Number: 20000630.1082
THEILERIA ANNULATA, CATTLE - UK (03): OIE CONFIRMED
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See Also
Theileria annulata, cattle - UK 2000.1757Theileria annulata, cattle - UK (02) 2000.2253
Date: 30 June 2000
From: ProMED-mail
Source: OIE website
Accidental infection
Emergency report
Text of a fax received on 26 Jun 2000 from Dr J.M. Scudamore, Chief
Veterinary Officer, Ministry of Agriculture, Fisheries and Food, London:
Report date: 26 Jun 2000.
Date of first suspicion: 3 Mar 2000.
Date of confirmation: 25 Mar 2000.
The United Kingdom has acted to contain an accidental infection of cattle
at a research institute with _Theileria annulata_.
The disease was detected in a dairy herd, kept by a research institute at
its premises in Scotland, following postmortem examination of an animal
which died on the farm. The 668 other cattle at the research institute farm
were tested for the disease and 25 cattle were found to be infected with
_Theileria_.
Total number of animals in the outbreak:
species bovine
susceptible 669
cases 26*
deaths 1
destroyed 25
slaughtered 0
* 25 cases diagnosed at the laboratory; 1 case diagnosed at post-mortem
examination.
Epidemiology:
It is likely that the infection occurred as a result of cross contamination
from other animals kept by the institute which were experimentally infected
under licence with _T. annulata_ as part of their research to develop a
vaccine.
As the natural vector of _T. annulata_ does not exist in the United
Kingdom, spread within the dairy herd is believed to have been by poor
blood sampling techniques.
Action taken:
The 25 other cattle found to be infected with Theileria were voluntarily
destroyed by the institute.
Restrictions on animal movements off the farm will remain in place until
testing establishes that the infection has been eliminated.
Tracing is in progress to locate and test other animals from the herd which
have left the research institute farm.
Containment procedures on the premises have been revised as have procedures
for blood sampling animals on the premises.
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