Herpesviruses are large (160 to 180 nm), enveloped DNA viruses that can be divided into three subfamilies (Alphaherpesvirinae,
Betaherpesvirinae, and Gammaherpesvirinae).
These included the following: 1) vaccination against hepatitis A (genus Hepatovirus) and measles (genus Morbillivirus); 2) serologic testing for cytomegalovirus (subfamily
Betaherpesvirinae; positive), herpesvirus B (family Herpesviridae, negative), simian type D virus (simian retrovirus; SRV-1, -2, and-3; negative), simian immunodeficiency virus (SIV, genus Lentivirus; negative), simian T-lymphotropic virus (STLV, genus BLV-HTLV retroviruses; negative); 3) testing by polymerase chain reaction for SRV-1, -2, and -3 (negative); 4) Mantoux skin test for Mycobacterium tuberculosis (negative x4); and 5) treatment for endoparasites with albendazole and avermectin, for ectoparasites with insecticide dust, and for Plasmodium spp.