RT Journal Article SR Electronic T1 Burden of respiratory syncytial virus infection in older and high-risk adults: a systematic review and meta-analysis of the evidence from developed countries JF European Respiratory Review JO EUROPEAN RESPIRATORY REVIEW FD European Respiratory Society SP 220105 DO 10.1183/16000617.0105-2022 VO 31 IS 166 A1 Jonathan S. Nguyen-Van-Tam A1 Maureen O'Leary A1 Emily T. Martin A1 Esther Heijnen A1 Benoit Callendret A1 Roman Fleischhackl A1 Christy Comeaux A1 Thao Mai Phuong Tran A1 Karin Weber YR 2022 UL http://err.ersjournals.com/content/31/166/220105.abstract AB Background Respiratory syncytial virus (RSV) significantly impacts the health of older and high-risk adults (those with comorbidities). We aimed to synthesise the evidence on RSV disease burden and RSV-related healthcare utilisation in both populations.Methods We searched Embase and MEDLINE for papers published between 2000 and 2019 reporting the burden and clinical presentation of symptomatic RSV infection and the associated healthcare utilisation in developed countries in adults aged ≥60 years or at high risk. We calculated pooled estimates using random-effects inverse variance-weighted meta-analysis.Results 103 out of 3429 articles met the inclusion criteria. Among older adults, RSV caused 4.66% (95% CI 3.34–6.48%) of symptomatic respiratory infections in annual studies and 7.80% (95% CI 5.77–10.45%) in seasonal studies; RSV-related case fatality proportion (CFP) was 8.18% (95% CI 5.54–11.94%). Among high-risk adults, RSV caused 7.03% (95% CI 5.18–9.48%) of symptomatic respiratory infections in annual studies, and 7.69% (95% CI 6.23–9.46%) in seasonal studies; CFP was 9.88% (95% CI 6.66–14.43%). Data paucity impaired the calculation of estimates on population incidence, clinical presentation, severe outcomes and healthcare-related utilisation.Conclusions Older and high-risk adults frequently experience symptomatic RSV infection, with appreciable mortality; however, detailed data are lacking. Increased surveillance and research are needed to quantify population-based disease burden and facilitate RSV treatments and vaccine development.In developed countries, older adults and those at risk of complications frequently experience symptomatic respiratory syncytial virus infection. However, more data on key health indicators are required to clarify disease burden and impact in these groups. https://bit.ly/3zvEHxc