The Threat Posed by SARS is Unprecedented By:JASBANT SINGH, Associated Press Writer April 26, 2003 Asian health ministers agree measures to stop 'unprecedented threat' of SARS KUALA LUMPUR, Malaysia - Asian health ministers agreed Saturday on measures to slow the spread of SARS, including more screening at international departure points, a bar on travelers showing symptoms of the virus and a requirement for health declaration forms for visitors from affected countries. "The threat posed by SARS is unprecedented," said the regional director of the World Health Organization, Shigeru Omi. "The virus has already demonstrated its explosive power to cause sudden...