any-to-any architecture that has virtual connections in a switched environment. AT&T defines VPLS as any-to-any Ethernet that can be either metro or long haul. Since Ethernet is an integral part of VPLS, it is important to understand how Ethernet works and can be used within an enterprise network. Ethernet
HIV in America: New York City Was First 'Hub'. Also, the surprising true story of 'Patient Zero'. MedpageToday. The virus that eventually brought HIV/AIDS to light probably arrived in the U.S. in 1970 or 1971, immigrating from Africa though Haiti, researchers said.
New testing has changed this. The first case of HIV transmitted through blood was recognized in 1982. By 2001, it is thought, 14,262 persons have had AIDS as a result of a blood transfusion. Some countries delayed testing even longer - testing was incomplete in Japan and Germany well after other countries began maintaining an HIV-free blood system.