Boulder, WY – State Veterinarian Jim Logan says a cattle herd in Sublette county is infected with brucellosis. Wyoming has been a brucellosis-free state for nearly 25 years. Logan says the 400 cow herd in the Boulder area tested positive on Tuesday and has since been quarantined. Infected animals will soon be sent to slaughter. The source of the infection is unknown. STate officials aren't sure how the discovery will affect Wyoming's cattle industry. Colorado has already banned shipments of cattle from the Sublette county region. Authorities will test two other herds in the area in coming weeks. A meeting is scheduled December 15th in Pinedale to discuss the issue.