A congressionally mandated study group contends a national facility should be established to research, develop and produce vaccines to combat biological terrorism. The Advisory Panel to Assess Domestic Response Capabilities for Terrorism Involving Weapons of Mass Destruction approved the recommendations for its third report in late August and today released an advance executive summary of the report in response to the Sept. 11 terrorist attacks against the Pentagon and World Trade Center. "Biological weapons are no longer a potential threat,...