QUEBEC CITY, QUEBEC--(Marketwire - March 19, 2008) - Medicago Inc. (TSX VENTURE: MDG) today announced that its H5N1 Avian Influenza VLP vaccine ("H5N1 VLP vaccine"), made from the Indonesian strain, provided 100% protection in mice against a lethal challenge with live H5N1 viruses of the Vietnam strain. Including these results, the Company has now established that its lead H5N1 VLP vaccine has the potential to protect against three of the deadliest strains of pandemic influenza. In earlier studies, the Company demonstrated that its vaccine provides 100% cross-protection in mice against an influenza strain from Turkey.