Risk factors for severe respiratory syncytial virus-associated respiratory tract infection in a high HIV prevalence setting, South Africa, 2012 - 2018

BMC Infect Dis. 2024 Oct 9;24(1):1128. doi: 10.1186/s12879-024-10024-9.

Abstract

Background: Identifying risk factors for respiratory syncytial virus (RSV)-associated severe acute respiratory illness (SARI) will assist with targeting vaccine interventions.

Methods: Using surveillance data from South Africa (2012-2018), we compared the characteristics of individuals with RSV-associated influenza-like illness (ILI) (reference group) to those with RSV-associated SARI to describe factors associated with SARI using a multivariable analysis.

Results: RSV was detected in 6% (483/7792) of ILI cases and 15% (844/5672) of SARI cases. Factors associated with SARI in children included age < 2 months, compared to age 2-4 years (adjusted odds ratio (aOR) 54.4; 95% confidence interval (CI) 23.5-125.8), malnutrition (aOR 1.9; 95% CI 1.2-3.2), prematurity (aOR 2.4; 95% CI 1.3-4.6) and living with HIV (LWH) (aOR 22.5; 95% CI 2.9-174.3). In individuals ≥ 5 years, factors associated with SARI included age ≥ 65 years compared to age 5-24 years (aOR 10.7; 95% CI 1.1-107.5), symptom duration ≥ 5 days (aOR 2.7; 95% CI 1.1-6.3), underlying illness (aOR 2.7; 95% CI 1.5-26.1) and LWH (aOR 16.8, 95% CI: 4.8-58.2).

Conclusion: Individuals at the extremes of age and those with identified risk factors might benefit most from RSV prevention interventions.

Clinical trial number: Not applicable, this is not a clinical trial.

Keywords: HIV infection; Lower respiraptry tract infection; RSV; Respiratory syncytial virus; Risk factors.

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Child
  • Child, Preschool
  • Female
  • HIV Infections* / complications
  • HIV Infections* / epidemiology
  • Humans
  • Infant
  • Infant, Newborn
  • Male
  • Middle Aged
  • Prevalence
  • Respiratory Syncytial Virus Infections* / epidemiology
  • Respiratory Syncytial Virus, Human*
  • Respiratory Tract Infections* / epidemiology
  • Respiratory Tract Infections* / virology
  • Risk Factors
  • South Africa / epidemiology
  • Young Adult