🔬 Discovery

Short-course zidovudine against mother-to-child HIV transmission

Zidovudina de pauta corta contra la transmisión maternoinfantil del VIH

Date
1998 · confidence high
Place
Bangkok, Thailand
Credited to
Bangkok Collaborative Perinatal HIV Transmission Study (Shaffer, Chuachoowong and colleagues)
Field
Life & health

What was discovered

A trial in pregnant women who took oral zidovudine from week 36 of gestation and during labour, which halved HIV transmission to the child. It showed that a short, cheap regimen worked in resource-limited countries.

The results were announced in 1998 and published in The Lancet in 1999. The ACTG 076 trial (1994) had earlier shown a long, expensive regimen, which Bangkok shortened.

What it led to

  • perinatal HIV prophylaxis in developing countries
  • single-dose nevirapine trials (HIVNET 012)
  • global reduction of paediatric HIV infection
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Sources✓ verified 2026-11-04