When viewing this topic in a different language, you may notice some differences in the way the content is structured, but it still reflects the latest evidence-based guidance.

Last reviewed: 16 Mar 2025
Last updated: 05 Feb 2025

Summary

Definition

History and exam

Key diagnostic factors

  • increased risk of maternal HIV infection
  • increased risk of perinatal HIV transmission

Other diagnostic factors

  • oral candidiasis
  • increasing dyspnea
  • weight loss
  • fever
  • malaise
  • lymphadenopathy
  • maculopapular blanching rash

Risk factors

  • needle-sharing with injection drug use
  • unprotected receptive penile-vaginal intercourse
  • unprotected receptive anal intercourse
  • percutaneous needle stick
  • sexually transmitted infections (STIs) and bacterial vaginosis
  • high maternal viral load (perinatal transmission)
  • absence of prenatal maternal antiretroviral therapy (perinatal transmission)
  • breast-feeding in mothers without viral suppression (perinatal transmission)
  • violence against women and girls
  • receptive oral intercourse
  • insertive oral intercourse
  • multiple sexual partners
  • low maternal CD4 count (perinatal transmission)

Diagnostic tests

1st tests to order

  • maternal HIV-1/HIV-2 antigen/antibody enzyme-linked immunosorbent assay (ELISA)
  • maternal HIV-1/HIV-2 antibody differentiation immunoassay
  • neonatal HIV DNA or RNA polymerase chain reaction (PCR)

Tests to consider

  • HIV-1 western blot
  • HIV-1 indirect immunofluorescence assay (IFA)
  • HIV-1 nucleic acid test (NAT)
  • CD4 count
  • plasma HIV RNA levels (viral load)
  • renal function tests
  • liver function tests (LFTs)
  • drug resistance tests
  • complete blood count
  • glucose screening
  • fetal ultrasound
  • tests for coinfections

Treatment algorithm

Contributors

Authors

Rachel K. Scott, MD, MPH, FACOG

Associate Professor of Obstetrics and Gynecology

Georgetown University School of Medicine

Scientific Director of Women’s Health Research

MedStar Health Research Institute

Associate Chair for Research

MedStar Washington Hospital Center Department of Women’s and Infants’ Services

Washington

DC

Disclosures

RKS declares that she has participated in an advisory meeting for ViiV Healthcare and has received research funding from ViiV, managed by MedStar Health Institute.

Acknowledgements

Dr Rachel K. Scott would like to gratefully acknowledge Dr Isaac Delke, Dr Christina Bailey, and Dr Mettassebia Kano, the previous contributors to this topic.

Disclosures

ID, CB, and MK declare that they have no competing interests.

Peer reviewers

Aisha Sethi, MD

Assistant Professor of Medicine

Associate Residency Program Director

University of Chicago

Chicago

IL

Disclosures

AS declares that she has no competing interests.

Graham P. Taylor, MBChB, FRCP, FHEA

Reader in Communicable Diseases

Faculty of Medicine

Imperial College

London

UK

Disclosures

GPT has been reimbursed by various pharmaceutical companies for attending conferences, lecturing, and consulting, and has been chief investigator of investigator-initiated industry-funded research on HIV and pregnancy.

Use of this content is subject to our disclaimer