CMV Cytomegalovirus EBV Epstein-Barr virus HAV Hepatitis A virus HBV Hepatitis B virus HCV Hepatitis C virus HDV Hepatitis D virus HEV Hepatitis E virus HIV Human Immunodeficiency Virus HPV Human papillomavirus HTLV-1 Human T-cell leukemia virus type 1 HTLV-2 Human T-cell leukemia virus type 2 RSV Respiratory Syncytial virus