Nearly 400 alternative military servicemen in a military barrack in central Taiwan have shown influenza-like symptoms in the single largest cluster infection in Taiwan, the Department of Health (DOH) reported Monday. Lin Ting, deputy director-general of the DOH's Centers for Disease Control (CDC) , said 374 out of 2,700 servicemen have developed influenza symptoms. As of noon Monday, 81 had been tested positive for influenza A, and laboratory screening confirmed some to have the H1N1 flu strain and others the seasonal H3 strain. 'The patients are all mild cases and are being treated with Tamiflu,' Lin said. 'The CDC cannot rule out the possibility that the trainees have been infected with the new flu, and we will also not rule out the possibility of more cases,' he added. Lin said that the men were participating in three weeks of basic training due to end Aug. 24. Leaves and family visits have been suspended because of the cluster infection, Lin said, but it will not affect the dispatching of new trainees to the military. The cluster infection came to light Aug. 10 when a spate of servicemen began to develop fevers, coughs, sore throats and aches. The barrack notified the health authority the following day and an epidemic investigation was conducted immediately. The 1922 hot line provided by the CDC for reporting the epidemic has since been swamped with calls by family members of the servicemen, many of whom protested that they could not visit them. The CDC estimated that there were an additional 9,000 new flu cases through community infection over the past week. The number of serious case increased to 25, and among them, three are still in intensive care. 