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Published on: March 30, 2014
Disease progression among HIV-infected children who receive perinatal zidovudine prophylaxis
David R Berk1, Meira S Falkovitz-Halpern, Barbara Sullivan
1Division of Infectious Diseases, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA 94305-5208, USA.
Insights
Perinatal zidovudine prophylaxis (PZP) in HIV-infected infants was linked to earlier antiretroviral therapy (ART) initiation and reduced early disease progression. ART remained effective regardless of prior PZP exposure, indicating improved outcomes for infants receiving PZP.
Area of Science:
- Pediatric Infectious Diseases
- HIV/AIDS Research
- Clinical Epidemiology
Background:
- Mixed results exist on the prognosis of HIV-infected infants exposed to perinatal zidovudine prophylaxis (PZP).
- Understanding the long-term impact of PZP on disease progression and treatment efficacy is crucial.
Purpose of the Study:
- To evaluate early HIV disease progression in infants who received PZP.
- To assess the effectiveness of subsequent antiretroviral therapy (ART) in preventing early disease progression in this cohort.
Main Methods:
- A population-based cohort of 73 perinatally HIV-infected children with at least 3 years of follow-up was analyzed.
- Data on PZP administration and subsequent ART initiation were collected.
- Early HIV disease progression (Category C diagnosis) and age at ART initiation were compared between groups.
Main Results:
- Children receiving PZP initiated ART earlier (median 2 months) than those not receiving PZP (median 6 months).
- PZP was associated with decreased progression to Category C diagnosis by age 3 (21% vs. 45%).
- ART demonstrated similar effectiveness in preventing early HIV progression irrespective of prior PZP exposure.
Conclusions:
- Perinatally HIV-infected children who received PZP started ART significantly earlier.
- PZP was associated with reduced HIV disease progression by age 3.
- ART effectiveness was comparable in children with and without prior PZP exposure.
Background:
Studies of perinatal HIV infection have reported mixed results regarding the prognosis of HIV-infected infants exposed to perinatal zidovudine prophylaxis (PZP).
Methods:
We have followed a population-based cohort of children with perinatal HIV infection to evaluate whether early HIV disease progression was more common among those who received PZP and whether subsequent antiretroviral therapy (ART) was less effective in preventing early disease progression.
Results:
We identified 73 children with perinatal HIV infection born between 1994 and 2001 with at least 3 years of follow-up and with information concerning PZP administration. Children who received PZP started subsequent ART at an earlier age than those who did not receive PZP (median age at starting treatment: 2 months for PZP vs. 6 months for no PZP; P = 0.0002). PZP was associated with decreased early HIV progression: 21% (7 of 33) of children who received PZP progressed to a category C diagnosis by 3 years compared with 45% (18 of 40) of children who did not receive PZP (P = 0.047). Children who did not receive PZP progressed to a category C diagnosis at a younger age than children who received PZP (median: 4 vs. 11 months; P = 0.061). ART was as effective in preventing early HIV progression in children who received PZP as in children who did not receive PZP.
Conclusions:
In our population-based cohort of perinatally HIV-infected children, those who received PZP started ART at a significantly earlier age than those who did not receive PZP and also demonstrated decreased HIV disease progression by the age of 3 years.
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