PARIS--(BUSINESS WIRE)--ORVACS (Objectif Recherche VACcin Sida) has launched a Phase II study designed to test the hypotheses that combination therapy with potent antiviral agents and immunomodulator can lead to a decrease in the HIV viral reservoirs and, ultimately, to eradication of the virus. The study is currently being conducted at clinical sites in France, Spain, Italy, and the United Kingdom.