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Published Date: 2019-03-17 18:33:40
Subject: PRO/AH/EDR> Bovine tuberculosis - USA (02): (TX) cattle
Archive Number: 20190317.6372778
BOVINE TUBERCULOSIS - USA (02): (TEXAS) CATTLE
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Date: 14 Mar 2019
Source: Texas Animal Health Commission [edited]
https://www.tahc.texas.gov/news/2019/2019-03-14_TexasTB.pdf


Texas Animal Health Commission (TAHC) officials confirmed cattle tuberculosis (TB) in one Texas Panhandle dairy located in Sherman County. As a part of the ongoing epidemiological investigation, TAHC confirmed TB in an associated Dallam County calf raising operation.

The TB affected facilities are under quarantine or hold and will remain so until they meet all requirements for release through testing and removal of infected animals. The epidemiological investigations of both facilities continue. Dairy, calf raising and dairy heifer-raising operations in Texas and other states with epidemiological links to the infected herd will continue to be tested to determine the possible origin or potential spread of the disease.

"TAHC is working closely with the dairy involved, United States Department of Agriculture (USDA), the Texas dairy industry, and other states to ensure the disease is quickly contained and the affected dairies can return to normal business practices as soon as possible," said Dr Andy Schwartz, state veterinarian. "Texas' current TB-free status is not expected to be affected by the new cases."

Cattle tuberculosis is a chronic debilitating respiratory disease whose signs can include progressive weight loss, chronic cough, and general loss of condition. Like many other diseases, TB transmission is facilitated when animals are concentrated or held in close confinement. Infected animals normally spread TB bacteria to their herd mates by expelling infective droplets into the air which are inhaled or may contaminate feed.

A variety of other species are susceptible to TB, including elk, deer, bison, goats, swine, cats and humans. Sheep and horses are rarely affected. Although TB can affect humans, pasteurization of milk removes any risk of transmission, and meat from infected animals does not enter the food chain. Tuberculosis has a long incubation period (months to years) and was once the most prevalent infectious disease of cattle and swine in the United States. Cattle TB caused more losses among U.S. farm animals in the early part of this century than all other infectious diseases combined. Through a cooperative state-federal program, cattle tuberculosis has been nearly eradicated from livestock in the US.

In 2000, Texas earned USDA TB accredited-free status. In 2002, however, that status was temporarily revoked when 2 infected cattle herds were detected. After extensive testing, Texas regained its TB-free status from USDA in October 2006.

For general information about TB, visit https://www.tahc.texas.gov/animal_health/cattle/#cattletb.

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[More information on bovine tuberculosis may be found in the moderator's comments in ProMED-mail posting Bovine tuberculosis - USA (03): (MI) bovine, cervid, alert 20181012.6086231.

The dairy industry is segmented but all entwined. The dairy is one aspect. Once the calves come, they may be raised on different premises. Dairy heifer raising may be at another separate location. Consequently, to find the disease in one location means the others will automatically get tested. However, the facility raising the heifers may have multiple dairies' heifers. Consequently, this may be a big job of testing. It may take some time, and we wish Texas good luck. - Mod.TG

HealthMap/ProMED map available at:
Texas, United States: http://healthmap.org/promed/p/245]

See Also

Bovine tuberculosis - USA: (ND) bovine, new strain 20190119.6267277 
Bovine tuberculosis - Canada: (BC) bovine, new strain 20190110.6252087
2018
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Bovine tuberculosis - USA (08): (MI) cervids, alert 20181128.6170266 
Bovine tuberculosis - USA (07): (WI) bovine 20181123.6158947
Bovine tuberculosis - USA (06): (WI) bovine 20181107.6132360
Bovine tuberculosis - USA (05): (WI) bovine 20181031.6122495
Bovine tuberculosis - USA (04): (MI) bovine 20181012.6088328
Bovine tuberculosis - USA (03): (MI) bovine, cervid, alert 20181012.6086231
Bovine tuberculosis - Canada: (AB) Mexican strain, 2016 20180502.5780065
Bovine tuberculosis - USA (02): (MI) bovine 20180221.5642891
Bovine tuberculosis - USA: (NE) investigation proceeds 20180105.5540747
2017
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Bovine tuberculosis - USA (10): (SD) bovine, RFI 20171119.5453805
Bovine tuberculosis - USA (09): (SD) wildlife not 20170701.5144989
Bovine tuberculosis - USA (08): (MI) 20170428.5000559
Bovine tuberculosis - USA (07): (MI, SD) 20170421.4984706
Bovine tuberculosis - USA (06): (SD): new strain from Mexico 20170402.4942680
Bovine tuberculosis - USA (05): (MI) bovine 20170330.4935481
Bovine tuberculosis - USA (04): (SD) new strain from Mexico 20170318.4910416
Bovine tuberculosis - USA (03): (MI) 20170317.4906688
Bovine tuberculosis - USA (02): (SD) 20170305.4880068
Bovine tuberculosis - USA: (MI) 20170123.4786644
Bovine tuberculosis - USA (08): (IN) corr. 20170102.4737527
2016
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Bovine tuberculosis - USA (08): (IN) 20161228.4729068
Bovine tuberculosis - Canada (10): (AB) Mexican strain 20161217.4706014
Bovine tuberculosis - USA (07): (MI) 20161210.4688768
Bovine tuberculosis - Canada (09): (AB) Mexican strain 20161127.4657187
Bovine tuberculosis - Canada (08): (AB) Mexican strain 20161119.4640117
Bovine tuberculosis - Canada (07): (AB) Mexican strain 20161117.4636107
Bovine tuberculosis - USA (06): (IN) wild cervid surveillance 20161113.4625099
Bovine tuberculosis - Canada (05): (AB, SK) extended 20161110.4620082
Bovine tuberculosis - Canada (04): (AB) herds quarantined, investigation 20161106.4610944
Bovine tuberculosis - Canada (03): (AB) herds quarantined 20161101.4600493
Bovine tuberculosis - USA (05): (MI) new county affected 20161101.4600409
Bovine tuberculosis - Canada (02): (AB) herds quarantined 20161031.4598091
Bovine tuberculosis - Canada: (AB) 20161020.4574397
Bovine tuberculosis - USA (04): (IN) wild cervids 20160817.4420929
Bovine tuberculosis - USA (03): (MI) 20160519.4233252
Bovine tuberculosis - USA: (MI) 20160108.3919034
2015
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Bovine tuberculosis - USA (03): (MI) bovine 20150725.3534951
Bovine tuberculosis - USA (02): (MI) dairy cows 20150426.3323167
and other items in the archives
.................................................sb/tg/msp/sh

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