Retrospective screening for SARS-CoV-2 among 5,800 hospitalizations related to influenza-like illness during the 2018-19 pre-pandemic and 2019-2020 pandemic influenza seasons in the VAHNSI network, Spain

  1. Ainara Mira-Iglesias
  2. Beatriz Mengual-Chuliá
  3. Laura Cano
  4. Javier García-Rubio
  5. Miguel Tortajada-Girbés
  6. Mario Carballido-Fernández
  7. Juan Mollar-Maseres
  8. Germán Schwarz-Chavarri
  9. Sandra García-Esteban
  10. Joan Puig-Barberà
  11. Javier Díez-Domingo
  12. F. Xavier López-Labrador
  13. for the Valencia Hospital Network for the Study of Influenza and Respiratory Viruses Disease
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Abstract

On March 9 2020 the WHO Global Influenza Program (GIP) asked participant sites on the Global Influenza Hospital Surveillance Network (GIHSN) to contribute to data collection concerning severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). We re-analysed 5,833 viral RNA archived samples collected prospectively from hospital admissions for influenza-like illness (ILI) in the Valencia Region of Spain by the VAHNSI network (4 hospitals, catchment area population 1,118,732) during the prepandemic 2018/2019 (n=4,010) and pandemic 2019/2020 (n=1,823) influenza seasons, for the presence of SARS-CoV-2. We did not find evidence for community-acquired SARS-CoV-2 infection in hospital admissions for ILI in our region before early March 2020.

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