World Virus Map - geographical representation of infected files and computers across the globe. Also: the virus information library. From McAfee.com.
CERT Coordination Center - studies Internet security vulnerabilities, provides incident response services, publishes security alerts, publishes virus information, researches security and survivability in WAN computing.
FBI National Infrastructure Protection Center (NIPC) - performs threat assessment, warning, investigation, and response for threats or attacks against critical infrastructures, including telecommunications, utilities, government operations, and emergency services.
Computer Virus Timeline - from 1949, when theories for self-replicating programs first developed, to 2001. From Infoplease.com.