acute HIV infection

In 2012, Daniel Kuritzkes reported results of two stem cell transplants in patients with HIV. They did not, however, use donors with the Δ32 deletion. One of the men has been followed for two years and the other for three and a half years. While both are still on HIV treatment, neither shows traces of HIV in their blood plasma and purified CD4 T cells using a sensitive culture method (less than 3 copies/ml). They are also showing a significant decline in HIV antibodies, suggesting a lack of HIV replication.[verification needed]