There's A Surge In Mosquitoes Infected With West Nile VirusA record number of mosquitoes are testing positive for the West Nile virus in Boulder, Weld, and Larimer counties.
Mosquitoes That Carry Zika Virus Not In ColoradoThe mosquitoes that carry the Zika virus are not in Colorado but travelers to those countries where the insects live are being warned.
Plague Infects Woman Visiting Colorado 'It's Been Here For Decades'A woman visiting Colorado last month became infected with the bubonic plague, the latest in what the Centers for Disease Control and Prevention says is an unusually high number of human cases in the U.S.
Cat In Grand County Tests Positive For The PlagueThe state health department has confirmed that a cat in Grand County has tested positive for the plague.
Mosquito Spraying In Longmont Begins Thursday NightLongmont will be spraying 12 areas for mosquitoes starting Thursday night to reduce the threat of West Nile virus.
Longmont To Activate Mosquito Spraying CrewsCrews will be out in Longmont spraying parts of the city for mosquitoes Thursday evening.
First Human Case Of West Nile In Colorado ConfirmedAuthorities have confirmed the year's first human case of the West Nile virus in Colorado.
Larimer County Teen Death Blamed On Hidden Form Of PlagueWhen a Larimer County teen came down with a high fever and muscle aches, his family thought he had the flu. But he was dead within days and the rare cause was only revealed later.
Bat Stuck To Zoo Visitor's Wheelchair May Have Been A Rabid Wild BatA bat with rabies was found at the Denver Zoo and now a zoo visitor told CBS4 he had a bat stuck to his wheelchair.
Rabies Found In Wild Bat At Denver ZooA wild bat that was not part of the Denver Zoo's collection, has tested positive for rabies.
More Human Plague Cases Surface In ColoradoThree more people have become ill from the plague in Colorado.