73.9% of patients has been diagnosed for more than 1 year, 46% is 30–39 years, 61.5% has college education or above, 12.8% is unemployed, 5.4% and 23.6% has abnormal CD4+ or CD4+/CD8+ ratio, respectively, for more than one year of infection (see Table 1). Here, CD4 is linked to infection.