Vaccination among HIV-infected, HIV-exposed uninfected and HIV-uninfected children: a systematic review and meta-analysis of evidence related to vaccine efficacy and effectiveness

Hum Vaccin Immunother. 2019;15(11):2578-2589. doi: 10.1080/21645515.2019.1599677. Epub 2019 May 22.

Abstract

Evidence-based approaches were used in making recommendations for vaccination against vaccine-preventable diseases for HIV-infected and HIV-exposed individuals but with limited substantiation. We conducted a systematic review and meta-analysis with randomized-controlled trials (RCTs), cohort and case-control studies that have efficacy and effectiveness of vaccines in HIV-infected and HIV-exposed children as outcomes. Web of Science, Cochrane Library, PubMed and Scopus databases were searched for articles. Efficacy of 9-valent pneumococcal conjugate vaccine (PCV9) against total vaccine serotype invasive pneumococcal disease was 32% in HIV-infected children and 78% among HIV-uninfected children. Vaccine effectiveness of Bacillus Calmette-Guérin vaccine in preventing tuberculosis in HIV-infected children was zero compared to 59% protection in HIV-unexposed children. Likewise, HIV-uninfected children have better protection against invasive Haemophilus influenzae type b disease than the HIV-infected children. Effectiveness studies of rotavirus vaccines show that HIV-exposed uninfected children have similar protection against rotavirus gastroenteritis compared to the non-exposed children. Children who are severely immunosuppressed are poorly protected against invasive pneumococcal diseases. HIV-infected children tend to have lesser vaccine protection against vaccine-preventable diseases when compared to unexposed children. HIV-infected children who are immunocompetent are more likely to have better vaccine protection against vaccine-preventable diseases than those who are immunosuppressed. The overall quality of the observational studies was very low with very little confidence in the effect estimate. The overall quality of evidence for the RCT outcomes was mainly high. This study reveals a dearth of efficacy and effectiveness studies among HIV-infected and exposed children.

Keywords: HIV; effectiveness; efficacy; sub-Saharan Africa; vaccine-preventable diseases.

Publication types

  • Meta-Analysis
  • Research Support, Non-U.S. Gov't
  • Systematic Review

MeSH terms

  • Adolescent
  • Africa South of the Sahara
  • Child
  • Child, Preschool
  • HIV Infections / immunology*
  • Humans
  • Infant
  • Observational Studies as Topic
  • Pneumococcal Infections / prevention & control
  • Pneumococcal Vaccines / immunology
  • Randomized Controlled Trials as Topic
  • Tuberculosis / prevention & control
  • Tuberculosis Vaccines / immunology
  • Vaccination / statistics & numerical data*
  • Vaccine Potency*

Substances

  • Pneumococcal Vaccines
  • Tuberculosis Vaccines

Grant support

OOA, DN and CSW are supported by the National Research Foundation of South Africa (Grant numbers: 106035 and 108571) and the South African Medical Research Council. OAU is supported by the National Institute of Health Research using Official Development Assistance funding. The views expressed in this publication are those of the authors and not necessarily those of the National Health Service, National Institute for Health.