Enlarge (credit: Getty | David Paul Morris) A second Colorado poultry farm has reported a case of bird flu in a worker, marking the state's seventh human case this month amid the ongoing outbreak among dairy cows. Colorado health officials said the seventh case is, for now, a presumptive positive. That means that the person has tested positive at the state level while confirmatory testing is being carried out at the Centers for Disease Control and Prevention. The presumptive positive worker was at a poultry facility in the state's northeastern Weld County.