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HIV replication during the first weeks of life

A Krivine1, G Firtion, L Cao

  • 1Department of Virology, Hôpital Saint-Vincent-de-Paul, University Paris V, France.

Lancet (London, England)
|May 16, 1992
PubMed

Insights

Early diagnosis of pediatric HIV infection is possible within the first two months using PCR or viral culture. This study found most HIV-positive infants were detected by 4-9 weeks, not at birth, suggesting early replication.

Area of Science:

  • Virology
  • Pediatric Infectious Diseases
  • Immunology

Background:

  • Diagnosing HIV infection in infants born to HIV-positive mothers is crucial for timely intervention.
  • Current diagnostic methods allow for HIV detection within the first year, but early detection in the initial weeks remains understudied.

Purpose of the Study:

  • To investigate the feasibility of early diagnosis of perinatal HIV-1 infection within the first few weeks of life.
  • To evaluate the performance of Polymerase Chain Reaction (PCR), viral culture, and p24 antigen assays for early HIV detection in infants.

Main Methods:

  • A prospective longitudinal study involving 50 infants born to HIV-1 seropositive mothers.
  • Blood samples were collected at birth, 4-9 weeks, and 5-9 months.
  • Samples were tested for HIV-1 using PCR, viral culture, and p24 antigen measurements.

Main Results:

  • By 4-9 weeks of age, 16 infants were diagnosed with HIV-1 infection via PCR and viral culture.
  • Only 5 infants tested positive for HIV-1 at birth.
  • No changes in HIV status were observed between 4-9 weeks and 5-9 months in 44 retested infants.

Conclusions:

  • Perinatal HIV-1 infection is diagnosable within the first two months of life using PCR or viral culture.
  • The high rate of negative results at birth suggests active HIV replication occurs in the early weeks of life.
  • Findings support the hypothesis that HIV-1 transmission often happens late in pregnancy or during delivery.

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