Inoculation of New World Primates With the Human Immunodeficiency Virus

The susceptibility of common marmosets and cotton‐top tamarins to infection by HIV‐2 in vivo was tested. One year and 19 months, respectively, post‐inoculation, sera taken from three of four animals from each species are reactive for HIV‐2 antibodies and HIV‐specific nucleotide sequences were demonstrated in short‐term cultures of PBL from two cotton‐top tamarins. The animals remain in good health.