From Kentucky Public Radio's Tony McVeighAt least 22 people in Kentucky have now died from H1N1, or swine flu, since the disease first entered the state in late April.The latest swine flu deaths occurred in Floyd, Boone, Nelson and Pendleton counties and involved two men in their 20’s and 40’s, a school-aged child and female in her 40’s. Meanwhile, swine flu vaccine continues arriving in Kentucky.State Epidemiologist Dr. Kraig Humbaugh says the state has been allocated more than 575-thousand doses of vaccine.“Of those doses, 513-thousand have been ordered. That’s about 89-percent of the total," says Humbaugh. "And over 474-thousand had already been shipped to Kentucky. That’s 82 percent.”Humbaugh says the current allotment is enough to cover about 13-percent of the state’s population. Swine flu continues to be the dominant strain of flu in Kentucky, accounting for 99-percent of current flu cases.