r/prospective study of perinatal infection of HIV-1^VxOO^VO27 Mar 2009 16:19hiv0001cd40001cd80001%9.0g%9.0g%9.0g%9.0g%%9.0g%8.0g%8.0g%8.0g%8%9.0g%8.0g%8.0g%8.0g%8.1=positive HIV; 0=negative HIV0while blood serum level of CD4; ordinal 0, 1, 2hile blood serum level of CD8; ordinal 0, 1, 2hile