HOUSTON, May 20 (Xinhua) -- A 13-year-old boy from Tucson, Arizona, died with A/H1N1 flu virus, bringing the death toll to three in the state, local health officials said on Wednesday.

    Patti Woodcock, spokeswoman for the Pima County Health Department in Arizona, said the boy died on Friday of complications from the A/H1N1 flu.

    She said the boy had been hospitalized since May 10 and several of his family members were also ill with the virus and most have recovered. One sibling remains hospitalized, she added.

    Arizona is one of the states hardest-hit by the outbreak of A/H1N1 flu virus in the United States. The confirmed cases of the A/H1N1 flu reached to 488 in the state on Wednesday, with two deaths not including the 13-year-old boy.

    Nationwide, U.S. Centers for Disease Control and Prevention (CDC) reported more than 5,700 confirmed and probable cases of A/H1H1 flu in 47 states and Washington, D.C. If the latest deaths in Utah and Arizona are confirmed, the death toll reaches to 10.

    Health officials believe that those hospitalized with the infection who have underlying health problems fare worse than otherwise healthy people who also have been hospitalized.

    "The most common conditions were chronic lung disease, conditions associated with immunosuppression, chronic heart disease, obesity and pregnancy," said Dr. Anne Schuchat, the CDC's interim deputy director for science and public health program.

Special Report:  World Tackles A/H1N1 Flu