After nearly 12,000 tests, Nebraska agriculture officials still haven't found any additional cases of bovine tuberculosis.
The latest results released Monday show a total of 10,500 cattle in north-central and eastern Nebraska have tested negative for the disease since two cases were discovered this spring in a Rock County herd.
Officials are waiting for results of the 1,300 tests done last week, and roughly 5,000 more cattle must be tested to determine whether the disease is prevalent in Nebraska.
As of Sunday, 22 herds in 12 counties remained quarantined.
The disease typically spreads from one animal to another through the inhalation of bacteria. Experts say there is little risk of the disease being transmitted to humans.
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