Previous studies have identified several cellular proteins that may function at early steps of infection, including platelet-derived growth factor receptor-α (PDGFR-α) [14,15], epidermal growth factor receptor (EGFR) [16], DC-SIGN [17], αVβ3 and β1 integrins [18,19], and paxillin [20]. Here, PDGFRA is linked to infection.