Risk factors for severe influenza A virus pneumonia in adult cohort, Mexico, 2013-14

During the 2013-14 influenza season, we assessed characteristics of 102 adults with suspected influenza pneumonia in a hospital in Mexico; most were unvaccinated. More comorbidities and severity of illness were found than for patients admitted during the 2009-10 influenza pandemic. Vaccination policies should focus on risk factors.

C reactive protein; ceftriaxone; clarithromycin; lactate dehydrogenase; levofloxacin; oseltamivir; adult; aged; arterial oxygen tension; article; blood analysis; body mass; comorbidity; coughing; diabetes mellitus; dyspnea; female; fever; hospitalization; human; influenza A (H1N1); inspired oxygen ratio; major clinical study; male; metabolic parameters; Mexico; obesity; pneumonia; prevalence; questionnaire; reverse transcription polymerase chain reaction; rhinorrhea; risk factor; severity of illness index; sputum analysis; thorax radiography; tracheal aspiration procedure; vaccination; adolescent; cohort analysis; complication; epidemic; history; Influenza virus A H1N1; Influenza, Human; middle aged; Pneumonia, Viral; young adult; Adolescent; Adult; Aged; Cohort Studies; Comorbidity; Disease Outbreaks; Female; History, 21st Century; Hospitalization; Humans; Influenza A Virus, H1N1 Subtype; Influenza, Human; Male; Mexico; Middle Aged; Pneumonia, Viral; Risk Factors; Severity of Illness Index; Young Adult

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