State and university animal-health leaders say Wisconsin has been dealing with the same strain of avian influenza, or H5N1, for several years.

Health officials on Thursday confirmed a second case of bird flu at a facility within Jefferson County following surveillance testing of the infected poultry flock.

A second case of bird flu has been reported in Jefferson County in a week. The Wisconsin Department of Agriculture, Trade and ...

The prior infected flock, reported Sept. 24, had more than 3 million chickens. This one had more than a half-million.

The Wisconsin Department of Agriculture, Trade and Consumer Protection has confirmed another case of bird flu in a Jefferson ...

DATCP is suspending all poultry shows, exhibitions, swap meets, and movement of poultry in Jefferson, Waukesha, Walworth, and ...

An Italian manufacturer is planning to build a new 223,000-square-foot U.S. headquarters in Johnson Creek, where it will ...

The National Weather Service confirmed that an EF-1 tornado touched down in Jefferson County, Wisconsin, during Friday's storms.The tornado touched down at 10:28 p.m. Friday 1.4 miles northeast of ...

JEFFERSON COUNTY, Wis.--(BUSINESS WIRE)--Onego Bio, a food ingredient company producing egg protein powder through fermentation, will become the second tenant at Jefferson County’s Food and Beverage ...

It has been five years since Nedra and Jim Lemke were killed in Jefferson County. Kevin Anderson, the man accused of killing them, shooting a deputy and setting a house on fire, remains wanted. Anyone ...

Bird flu confirmed in a Racine County, Wisconsin, backyard poultry flock; birds were depopulated to control spread.