In Children
Due to the additional knowledge of the progression of HIV disease among children, a revised classification system for HIV infection in children was developed in 1994 that replaced the pediatric HIV classification system that was published in 1987. A child for the purposes of the CDC 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 infection status before 18 months of age, so viral antigen tests are used.
In the new system, HIV-infected children are classified into mutually exclusive categories according to three parameters:
- a) infection status
- b) clinical status
- c) immunologic status
This classification system reflects the stage of the child's disease, establishes mutually exclusive classification categories, and balances simplicity and medical accuracy in the classification process. This document also describes revised pediatric definitions for two acquired immunodeficiency syndrome-defining conditions.
When an infant is born to an HIV-infected mother, diagnosis of an HIV infection is complicated by the presence of maternal anti-HIV IgG antibody, which crosses the placenta to the fetus. Indeed, virtually all children born to HIV-infected mothers are HIV-antibody positive at birth, although only 15%-30% are actually infected.
Read more about this topic: CDC Classification System For HIV Infection
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—C. John Sommerville (20th century)