(AGI) Rome, July 1 - A migrant placed under quarantine byItalian authorities after being rescued at sea by the navy hasbeen diagnosed with chickenpox rather than a more seriousdisease, Italy's Ministry of Health reported on Tuesday. Thetests were carried out at the Spallanzani national institutefor infectious diseases in Rome. The man no longer needs toremain in quarantine, the ministry added. . .