Related Experiment Video
Updated: Aug 7, 2026

Amplifying and Quantifying HIV-1 RNA in HIV Infected Individuals with Viral Loads Below the Limit of Detection by Standard Clinical Assays
Published on: September 26, 2011
Vertical transmission of HIV-1 in Poland
M Marczyńska1, M Szczepańska-Putz
1Department of Children's Infectious Diseases, Medical University, Warsaw, Poland.
Insights
Zidovudine prophylaxis significantly reduced vertical HIV transmission in Poland. No infants receiving zidovudine therapy became infected, highlighting its effectiveness in preventing mother-to-child HIV transmission.
Area of Science:
- Pediatrics
- Infectious Diseases
- Public Health
Background:
- Vertical transmission of Human Immunodeficiency Virus type 1 (HIV-1) remains a significant global health concern.
- Poland implemented zidovudine prophylactic strategies to reduce perinatal HIV-1 infection rates.
Purpose of the Study:
- To evaluate the impact of zidovudine prophylactic strategies on vertical HIV-1 transmission rates in Poland.
- To analyze the relationship between zidovudine therapy, delivery methods, and perinatal HIV-1 infection.
Main Methods:
- Retrospective analysis of data from 100 children born to 91 HIV-positive mothers at a paediatric HIV referral centre in Warsaw.
- Examination of zidovudine therapy, mode and timing of delivery in relation to HIV-1 infection.
Main Results:
- The HIV-1 transmission rate decreased from 31.5% (1989-1994) to 19.6% (post-1995 recommendations).
- In mother-infant pairs receiving zidovudine therapy (62%), no children were infected with HIV-1.
Conclusions:
- Zidovudine chemoprophylaxis is effective in reducing mother-to-child HIV transmission.
- The implementation of zidovudine prophylactic strategies has led to a significant decline in vertical HIV transmission in Poland.
- Zidovudine therapy should be recommended for all HIV-infected pregnant women and their infants.
Abstract:
The aim of our study was to evaluate changes in vertical transmission of HIV infection in Poland after introducing zidovudine prophylactic strategies. Data from the Department of Children's Infectious Diseases (a paediatric HIV referral centre) at the Medical University, Warsaw was studied. Since 1989 vertical transmission of HIV-1 has been studied in 100 children born to 91 HIV-positive mothers (2 sets of twins). Zidovudine therapy, mode and timing of delivery and their relationship to perinatal HIV-1 infection were analysed. From 1989 to 1994 the transmission rate was 31.5%. Since 1995, when recommendations based on ACTG 076 were issued, a decline in a transmission rate to 19.6% was reported. 62% (32 out of 52) mother-infant pairs received zidovudine therapy. None of those children have become HIV infected. Zidovudine chemoprophylaxis regimen reduces the risk for mother to child transmission. It should be recommended for all HIV-infected pregnant women or women in labour and their infants.
Related Concept Videos
Sexually Transmitted Infections
Transmission of Pathogens
Poliomyelitis
Toxoplasmosis
Amebiasis

