Hospitalized Patients with 2009 H1N1 Influenza in the United States, April–June 2009

Hospitalized patients with 2009 H1N1 influenza in the United States, April-June 2009.

BACKGROUND During the spring of 2009, a pandemic influenza A (H1N1) virus emerged and spread globally. We describe the clinical characteristics of patients who were hospitalized with 2009 H1N1 influenza in the United States from April 2009 to mid-June 2009. METHODS Using medical charts, we collected data on 272 patients who were hospitalized for at least 24 hours for influenza-like illness an...

Asthma in patients hospitalized with pandemic influenza A(H1N1)pdm09 virus infection–United States, 2009

BACKGROUND Asthma was the most common co-morbidity among patients hospitalized with pandemic influenza A(H1N1)pdm09 [pH1N1] infection. The objective was to compare characteristics of hospitalized pH1N1 patients with and without asthma and assess factors associated with severity among asthma patients. METHODS Patient data were derived from two 2009 pandemic case-series of U.S. pH1N1 hospitaliz...

2009 H1N1 Influenza Virus Seroepidemiology

Hospitalized Patients with Pandemic (H1N1) 2009, Kenya

To describe the epidemiology and clinical course of patients hospitalized with pandemic (H1N1) 2009 in Kenya, we reviewed medical records of 49 such patients hospitalized during July-November 2009. The median age (7 years) was lower than that in industrialized countries. More patients had HIV than the general Kenyan population.

Children hospitalized with 2009 novel influenza A(H1N1) in California.

OBJECTIVE To describe clinical and epidemiologic features of 2009 novel influenza A(H1N1) in children. DESIGN Analysis of data obtained from standardized report forms and medical records. SETTING Statewide public health surveillance in California. PARTICIPANTS Three hundred forty-five children who were hospitalized with or died of 2009 novel influenza A(H1N1). MAIN EXPOSURE Laboratory-c...