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We describe the epidemiology of influenza virus infections in refugees in a camp in rural Southeast Asia during May-October 2009, the first 6 months after identification of pandemic (H1N1) 2009 in Thailand. Influenza A viruses were detected in 20% of patients who had influenza-like illness and in 23% of those who had clinical pneumonia. Seasonal influenza A (H1N1) was the predominant virus circulating during weeks 26-33 (June 25-August 29) and was subsequently replaced by the pandemic strain. A review of passive surveillance for acute respiratory infection did not show an increase in acute respiratory tract infection incidence associated with the arrival of pandemic (H1N1) 2009 in the camp.

Original publication

DOI

10.3201/eid1609.100220

Type

Journal article

Journal

Emerg Infect Dis

Publication Date

09/2010

Volume

16

Pages

1366 - 1372

Keywords

Adolescent, Adult, Aged, Child, Child, Preschool, Female, Humans, Infant, Influenza A Virus, H1N1 Subtype, Influenza, Human, Male, Middle Aged, Myanmar, Pandemics, Population Surveillance, Refugees, Seasons, Thailand, Young Adult