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- Title
Illness Severity in Hospitalized Influenza Patients by Virus Type and Subtype, Spain, 2010-2017.
- Authors
Delgado-Sanz, Concepción; Mazagatos-Ateca, Clara; Oliva, Jesús; Gherasim, Alin; Larrauri, Amparo
- Abstract
We conducted a retrospective cohort study to assess the effect of influenza virus type and subtype on disease severity among hospitalized influenza patients in Spain. We analyzed the cases of 8,985 laboratory-confirmed case-patients hospitalized for severe influenza by using data from a national surveillance system for the period 2010-2017. Hospitalized patients with influenza A(H1N1)pdm09 virus were significantly younger, more frequently had class III obesity, and had a higher risk for pneumonia or acute respiratory distress syndrome than patients infected with influenza A(H3N2) or B (p<0.05). Hospitalized patients with influenza A(H1N1)pdm09 also had a higher risk for intensive care unit admission, death, or both than patients with influenza A(H3N2) or B, independent of other factors. Determining the patterns of influenza-associated severity and how they might differ by virus type and subtype can help guide planning and implementation of adequate control and preventive measures during influenza epidemics.
- Subjects
SPAIN; INFLUENZA; INFLUENZA A virus; HOSPITAL patients; ADULT respiratory distress syndrome; INTENSIVE care units -- Admission &; discharge; INFLUENZA epidemiology; AGE distribution; RETROSPECTIVE studies; SEVERITY of illness index; HOSPITAL care; INFLUENZA A virus, H1N1 subtype; INFLUENZA A virus, H3N2 subtype; LONGITUDINAL method
- Publication
Emerging Infectious Diseases, 2020, Vol 26, Issue 2, p220
- ISSN
1080-6040
- Publication type
journal article
- DOI
10.3201/eid2602.181732