Influenza illness among case-patients hospitalized for suspected dengue, El Salvador, 2012

Rafael Chacon, Alexey Wilfrido Clara, Jorge Jara, Julio Armero, Celina Lozano, Nathalie El Omeiri, Marc-Alain Widdowson, Eduardo Azziz-Baumgartner

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We estimate the proportion of patients hospitalized for suspected dengue that tested positive for influenza virus in El Salvador during the 2012 influenza season. We tested specimens from 321 hospitalized patients: 198 patients with SARI and 123 patients with suspected dengue. Among 121 hospitalized suspected dengue (two co-infected excluded) patients, 28% tested positive for dengue and 19% positive for influenza; among 35 with suspected dengue and respiratory symptoms, 14% were positive for dengue and 39% positive for influenza. One percent presented co-infection between influenza and dengue. Clinicians should consider the diagnosis of influenza among patients with suspected dengue during the influenza season.

Original languageEnglish
JournalPLoS ONE
Issue number10
Pages (from-to)e0140890
Publication statusPublished - 2015


  • Adolescent
  • Child
  • Child, Preschool
  • Coinfection/diagnosis
  • Cross-Sectional Studies
  • Dengue/complications
  • El Salvador
  • Female
  • Humans
  • Infant
  • Influenza, Human/complications
  • Male
  • Sentinel Surveillance


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