Infection begins with attachment of virus particles to host receptors, several of which have been identified as putative receptors i.e. heparan sulphate [6], heat shock proteins, Hsp70 and Hsp 90 [7], Glucose-regulated protein (GRP78/Bip) [8], a 37-kDa/67-kDa high affinity laminin receptor [9], [10] and Dendritic cell-specific intercellular adhesion molecule-3-Grabbing non-integrin (DC-SIGN) [11]. This evidence concerns the gene CD209 and infection.