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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
medicine
Epidemiology of 2009 pandemic influenza a virus subtype H1N1 among kenyans aged 2 months to 18 years, 2009-2010
Journal of Infectious Diseases, Volume 206, No. SUPPL.1, Year 2012
Notification
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Description
Background The US Army Medical Research Unit-Kenya (USAMRU-K) conducts surveillance for influenza-like illness (ILI) in Kenya. We describe the temporal and geographic progression of A(H1N1)pdm09 as it emerged in Kenya and characterize the outpatient population with A(H1N1)pdm09 infection.Methods We included patients with ILI aged 2 months to 18 years enrolled during June 2009-August 2010. Respiratory specimens were tested by real-time reverse-transcription polymerase chain reaction for influenza virus. Patients with A(H1N1)pdm09 infection were compared to those with seasonal influenza A virus infection and those with ILI who had no virus or a virus other than influenza virus identified (hereafter, "noninfluenza ILI").Results Of 4251 patients with ILI, 193 had laboratory-confirmed A(H1N1)pdm09 infection. The first pandemic influenza case detected by USAMRU-K surveillance was in August 2009; peak activity nationwide occurred during October-November 2009. Patients with A(H1N1)pdm09 infection were more likely to be school-aged, compared with patients with seasonal influenza A virus infection (prevalence ratio [PR], 2.0; 95% confidence interval [CI], 1.3-3.1) or noninfluenza ILI (PR, 3.2; 95% CI, 2.4-4.3).Conclusions USAMRU-K ILI surveillance detected the geographic and temporal distribution of pandemic influenza in Kenya. The age distribution of A(H1N1)pdm09 infections included more school-aged children, compared with seasonal influenza A virus infection and noninfluenza ILI. © 2012 The Author.
Authors & Co-Authors
Wong, Karen Kai Lun
United States, San Francisco
University of California, San Francisco
Bulimo, Wallace Dimbuson
United States, Silver Spring
Walter Reed Army Institute of Research
Magana, Japheth Mukuru
Kenya, Nairobi
Kenya Medical Research Institute
Achilla, Rachel A.
United States, Silver Spring
Walter Reed Army Institute of Research
Schwarcz, Sandra K.
United States, San Francisco
University of California, San Francisco
United States, Silver Spring
Walter Reed Army Institute of Research
Simwa, Maylor
Kenya, Nairobi
Kenya Medical Research Institute
Majanja, Janet
United States, Silver Spring
Walter Reed Army Institute of Research
Wadegu, Meshack
United States, Silver Spring
Walter Reed Army Institute of Research
Osuna, Finley A.
United States, Silver Spring
Walter Reed Army Institute of Research
Kenya, Nairobi
Kenya Medical Research Institute
Mukunzi, Silvanos
United States, Silver Spring
Walter Reed Army Institute of Research
Mwangi, Josephat K.
United States, Silver Spring
Walter Reed Army Institute of Research
Wangui, Julia
United States, Silver Spring
Walter Reed Army Institute of Research
Muthoni, Janet N.
United States, Silver Spring
Walter Reed Army Institute of Research
Njiri, James O.
United States, Silver Spring
Walter Reed Army Institute of Research
Obura, Beryl D.
United States, Silver Spring
Walter Reed Army Institute of Research
Opot, Benjamin H.
United States, Silver Spring
Walter Reed Army Institute of Research
Mitei, Keneth K.
United States, Silver Spring
Walter Reed Army Institute of Research
Barani, Jane
Kenya, Nairobi
Kenya Medical Research Institute
Lifumo, Samwel M.
Kenya, Nairobi
Kenya Medical Research Institute
Schnabel, David C.
United States, Silver Spring
Walter Reed Army Institute of Research
Statistics
Citations: 20
Authors: 20
Affiliations: 3
Identifiers
Doi:
10.1093/infdis/jis585
ISSN:
00221899
Research Areas
Maternal And Child Health
Study Design
Cross Sectional Study
Study Locations
Kenya