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Dissecting Host-virus Interaction in Lytic Replication of a Model Herpesvirus
Published on: October 7, 2011
HIV replication during the first weeks of life
1Department of Virology, Hôpital Saint-Vincent-de-Paul, University Paris V, France.
Lancet (London, England)
|May 16, 1992
Summary
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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