Human immunodeficiency virus type 1 antigenemia in children

Area of Science:

• Virology
• Pediatric Infectious Diseases
• Immunology

Background:

• Human immunodeficiency virus type 1 (HIV-1) infection in children presents unique diagnostic and clinical management challenges.
• Early diagnosis and staging are crucial for effective intervention in pediatric HIV-1 infection.

Purpose of the Study:

• To evaluate the utility of HIV-1 core antigen detection in pediatric plasma for diagnosing HIV-1 infection.
• To correlate HIV-1 core antigen levels with the clinical stage of disease in children.

Main Methods:

• Plasma samples from children at risk for HIV-1 infection were assayed for core antigen.
• Antigen levels were quantified and correlated with clinical status (AIDS, AIDS-related illnesses, asymptomatic infection).
• Detection rates were analyzed across different age groups and clinical presentations.

Main Results:

• HIV-1 core antigen was detected in all children under 15 months with acquired immunodeficiency syndrome (AIDS).
• Core antigen was found in two-thirds of children with AIDS-related illnesses and half with asymptomatic infection.
• Quantitative antigen levels were significantly higher in children with AIDS compared to those with AIDS-related illnesses or asymptomatic infection.

Conclusions:

• HIV-1 core antigen detection is a valuable tool for diagnosing symptomatic HIV-1 infection in children, including young infants.
• Plasma core antigen levels correlate with disease severity and progression.
• Core antigen detection may be less frequent in asymptomatic children and was not detected at birth in infected newborns.