Due to the additional knowledge of the progression of<unk>  disease among<unk> , a revised classification system for<unk><unk>  in<unk>  was developed in 1994 that replaced the pediatric<unk>  classification system that was published in 1987. A child for the purposes of the<unk>  is an individual of less than 13 years of age. Standard anti-HIV IgG antibody tests cannot be used to reliably indicate a child's<unk>  status before 18 months of age, so viral antigen tests are used.
CDC Classification System for HIV Infection in Children
CDC Classification System for HIV Infection in Adults and Adolescents
HIV AIDS epidemiology and demographics
HIV AIDS classification
HIV AIDS screening
HIV AIDS diagnostic study of choice
HIV AIDS laboratory findings
Neurosyphilis Epidemiology and Demographics