 EBV may also infect epithelial cells, T cells, and natural killer cells through mechanisms different than the CD21 receptor-mediated process in B cells.The Zika virus is a mosquito-borne arbovirus in the genus "Flavivirus" that exhibits tropism for the human maternal decidua, the fetal placenta, and the umbilical cord.On the cellular level, the Zika virus targets decidual macrophages, decidual fibroblasts, trophoblasts, Hofbauer cells, and mesenchymal stem cells due to their increased capacity to support virion replication.