The enzyme-linked immunosorbent assay(ELISA) test is used to detect antibodies in blood and can indicate the presence of the HIV virus. Approximately 15% of the patients at one clinic have the HIV virus. Furthermore, among those that have the HIV virus, approximately 95% test positive on the ELISA test. Among those that do not have the HIV virus, approximately 2% test positive on the ELISA test. Find the probability that a patient has the HIV virus if the ELISA test is positive.