ArticlePloS one2012
Incidence and epidemiology of hospitalized influenza cases in rural Thailand during the influenza A (H1N1)pdm09 pandemic, 2009-2010.
Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.
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Who cites it
18 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Aetiology of childhood pneumonia in low- and middle-income countries in the era of vaccination: a systematic review.Journal of global health · 2022Pooled it
- Influenza surveillance and vaccine policy in Thailand-a historical perspective.The Lancet regional health. Southeast Asia · 2025Review
- Evidence of avian and human influenza A virus infection in farmed Siamese crocodiles (Crocodylus siamensis) in Thailand.PloS one · 2025Article
- Comparative global epidemiology of influenza, respiratory syncytial and parainfluenza viruses, 2010-2015.The Journal of infection · 2019Article
- Hospitalization and death among patients with influenza, Guatemala, 2008-2012.BMC public health · 2019Article
- CD4 T cells in protection from influenza virus: Viral antigen specificity and functional potential.Immunological reviews · 2018Review
- Literature review of the epidemiology of influenza B disease in 15 countries in the Asia-Pacific region.Influenza and other respiratory viruses · 2018Review
- Report on WHO meeting on immunization in older adults: Geneva, Switzerland, 22-23 March 2017.Vaccine · 2018Article
- Surveillance of respiratory viruses in the outpatient setting in rural coastal Kenya: baseline epidemiological observations.Wellcome open research · 2018Article
- Effectiveness of the 2013 and 2014 Southern Hemisphere Influenza Vaccines Against Laboratory-confirmed Influenza in Young Children Using a Test-negative Design, Bangkok, Thailand.The Pediatric infectious disease journal · 2016Article
- Assessment of potential public health impact of a quadrivalent inactivated influenza vaccine in Thailand.Influenza and other respiratory viruses · 2016Article
- Influenza vaccination coverage and effectiveness in young children in Thailand, 2011-2013.Influenza and other respiratory viruses · 2015Article
- Impact of 2009 pandemic influenza among Vietnamese children based on a population-based prospective surveillance from 2007 to 2011.Influenza and other respiratory viruses · 2014Article
- Effectiveness of the 2010 and 2011 Southern Hemisphere trivalent inactivated influenza vaccines against hospitalization with influenza-associated acute respiratory infection among Thai adults aged ≥ 50 years.Influenza and other respiratory viruses · 2014Article
- Epidemiology, etiology, x-ray features, importance of co-infections and clinical features of viral pneumonia in developing countries.Expert review of anti-infective therapy · 2014Review
- Surveillance for respiratory infections in low- and middle-income countries: experience from the Centers for Disease Control and Prevention's Global Disease Detection International Emerging Infections Program.The Journal of infectious diseases · 2013Article
- Acute lower respiratory infections in ≥ 5 year -old hospitalized patients in Cambodia, a low-income tropical country: clinical characteristics and pathogenic etiology.BMC infectious diseases · 2013Article
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15 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundData on the burden of the 2009 influenza pandemic in Asia are limited. Influenza A(H1N1)pdm09 was first reported in Thailand in May 2009. We assessed incidence and epidemiology of influenza-associated hospitalizations during 2009-2010.
methodsWe conducted active, population-based surveillance for hospitalized cases of acute lower respiratory infection (ALRI) in all 20 hospitals in two rural provinces. ALRI patients were sampled 1∶2 for participation in an etiology study in which nasopharyngeal swabs were collected for influenza virus testing by PCR.
resultsOf 7,207 patients tested, 902 (12.5%) were influenza-positive, including 190 (7.8%) of 2,436 children aged <5 years; 86% were influenza A virus (46% A(H1N1)pdm09, 30% H3N2, 6.5% H1N1, 3.5% not subtyped) and 13% were influenza B virus. Cases of influenza A(H1N1)pdm09 first peaked in August 2009 when 17% of tested patients were positive. Subsequent peaks during 2009 and 2010 represented a mix of influenza A(H1N1)pdm09, H3N2, and influenza B viruses. The estimated annual incidence of hospitalized influenza cases was 136 per 100,000, highest in ages <5 years (477 per 100,000) and >75 years (407 per 100,000). The incidence of influenza A(H1N1)pdm09 was 62 per 100,000 (214 per 100,000 in children <5 years). Eleven influenza-infected patients required mechanical ventilation, and four patients died, all adults with influenza A(H1N1)pdm09 (1) or H3N2 (3).
conclusionsInfluenza-associated hospitalization rates in Thailand during 2009-10 were substantial and exceeded rates described in western countries. Influenza A(H1N1)pdm09 predominated, but H3N2 also caused notable morbidity. Expanded influenza vaccination coverage could have considerable public health impact, especially in young children.
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