Two cluster infections of swine flu, officially known as influenza A(H1N1) , were confirmed Monday among soldiers who are helping with post-typhoon relief and cleanup work in southern Taiwan's Pingtung County. Lin Ting, deputy director-general of the Centers for Disease Control (CDC) under the Department of Health (DOH), said two samples collected from officers and enlisted men working at Tatan Elementary School in Donggang township tested positive for the H1N1 flu strain and a third one tested positive for the H3N2 seasonal flu strain. Meanwhile, two samples collected from the Wanjin army barrack in Wandan township both tested positive for the A(H1N1) virus. 'It marks the first time that swine flu cluster infections have been confirmed among military servicemen taking part in the post-disaster rescue and cleanup work,' Lin said. As to reports that one naval serviceman and one army soldier working in the disaster zone had succumbed to swine flu, Lin said the DOH had not received such information and described the reports as sheer speculation. According to CDC estimates, Taiwan should have 60 to 70 cluster H1N1 infections. On Monday, Taiwan also confirmed its fourth and fifth H1N1 fatalities. 