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Disease surveillance in England and Wales, October 2020

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Highlights from the scanning surveillance network

Cattle

‘Tyre wire’ disease

The APHA and its partner postmortem examination providers continue to diagnose problems with ingestion of foreign bodies, most often caused by tyre wires. In England and Wales, 409 diagnoses of traumatic reticuloperitonitis have been made since 2002, with 333 (81.4 per cent) of the cases in dairy herds and 386 (94.4 per cent) in adult animals.

Three APHA Veterinary Investigation Centres (VICs) recently reported cases, including an unusual manifestation of disease at the APHA Carmarthen VIC.

Two dairy cows in a large herd were found recumbent. The herd was being fed a total mixed ration and it was reported that a new silage clamp had recently been started. Both animals died before treatment could be given and one of the cows was received for postmortem examination.

Fibrous adhesions were present between the liver, diaphragm, abdominal wall and abomasum. There were necrotic and purulent tracts within the wall of the abomasum, and within one of these was a 3 cm tyre wire. The findings indicated that the ingested wire had passed into the abomasum and had penetrated the abomasal wall, causing purulent infection and localised peritonitis.

The rumen was distended with feed but there was very little intestinal content, suggesting that the abomasal pathology had obstructed the passage of ingesta.

About this report

This report is produced each month by the APHA Surveillance Intelligence Unit and the six Species Expert Groups (livestock and wildlife). The international horizon-scanning summaries are produced by the Defra/APHA International Disease Monitoring (IDM) team, notifiable disease reports by the APHA Veterinary Exotic and Notifiable Disease Unit (VENDU), and threat analysis by the cross-agency Veterinary Risk Group (VRG). The report is drawn from scanning surveillance information, data and reports produced by the APHA Veterinary Investigation Centres and non-APHA partner postmortem examination providers contributing to the Veterinary Investigation Diagnosis Analysis (VIDA) database …

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