Severity of respiratory syncytial virus compared with SARS-CoV-2 and influenza among hospitalised adults ≥65 years - 17/10/24

the SARI Sentinel Surveillance Group1
Summary |
Introduction |
Our aim was to estimate the risk of pneumonia, admission to intensive care unit (ICU) or death in individuals ≥65 years old admitted to hospital with RSV, compared to influenza or COVID-19.
Methods |
We included hospitalised patients from Severe Acute Respiratory Infection Surveillance in Spain between 2021–2024, aged ≥65 years, laboratory confirmed for RSV, influenza or SARS-CoV-2. Using a binomial regression with logarithmic link, we estimated the relative risk (RR) of pneumonia, ICU admission and in-hospital mortality, in patients with RSV compared to influenza or SARS-CoV-2, adjusting for age, sex, season and comorbidities. We stratified the estimates by vaccination status for influenza or SARS-CoV2.
Results |
Among patients unvaccinated for influenza or SARS-CoV-2, those with RSV had similar or lower risk of pneumonia [vs. influenza: RR= 0.91 (95% Confidence Interval: 0.72–1.16); vs. SARS-CoV-2: 0.81 (0.67–0.98)], ICU admission [vs. influenza: 0.93 (0.41–2.08); vs. SARS-CoV-2: 1.10 (0.61–1.99)] and mortality [vs. influenza: 0.64 (0.32–1.28); vs. SARS-CoV-2: 0.56 (0.30–1.04)]. Among the vaccinated, results were largely similar except for a higher risk of ICU admission with RSV [vs. influenza: 2.13(1.16–3.89); vs. SARS-CoV-2: 1.83 (1.02–3.28)]
Conclusions |
RSV presented similar or lower intrinsic severity than influenza or SARS-CoV2. Among vaccinated patients, RSV was associated to higher ICU-admission, suggesting the potential for preventive RSV vaccination.
Le texte complet de cet article est disponible en PDF.Highlights |
• | Patients hospitalised with RSV ≥65 years had 28% pneumonia, 4% ICU and 6% lethality. |
• | RSV showed similar or lower intrinsic severity compared to influenza or SARS-CoV-2. |
• | The risk of ICU admission was lower for RSV only among unvaccinated patients. |
• | In patients vaccinated for influenza or SARS-CoV-2 ICU admission was higher for RSV. |
• | Differences by virus for pneumonia or death did not differ by vaccination. |
Keywords : Severe acute respiratory infection, Syncytial respiratory virus, Influenza, SARS-CoV2, ICU admission, Pneumonia, Mortality, Vaccination
Plan
Vol 89 - N° 5
Article 106292- novembre 2024 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.