Influenza A (H1N1) 2009 Dead Cases Investigation in Chiang Dao District, Chiang Mai, Thailand, February 2014

Authors

  • Pantila Taweewigyakarn Bureau of Epidemiology, Department of Disease Control, Thai Ministry of Public Health
  • Jirapat Kanlayanaphotporn Chaophraya Yommarat Hospital, Suphan Buri Province
  • Chupong Sangsawang Fang Hospital, Chiang Mai province
  • Surachet Arunothong Office of Disease Prevention and Control 10, Chiang Mai province
  • Supharerk Thawillarp Bureau of Epidemiology, Department of Disease Control, Thai Ministry of Public Health
  • Poneau Boonyapaisarncharoen Bureau of Epidemiology, Department of Disease Control, Thai Ministry of Public Health
  • Suchada Jansiriyakorn Bureau of Epidemiology, Department of Disease Control, Thai Ministry of Public Health
  • Theeraphol Keereesamon Chiang Dao Hospital, Chiang Mai province
  • Kannikar Rubthongsuksakul Chiang Dao Hospital, Chiang Mai province
  • Mayurin Sonbalee Chiang Dao Hospital, Chiang Mai province
  • Chakkarat Pittayawonganon Bureau of Epidemiology, Department of Disease Control, Thai Ministry of Public Health

Keywords:

influenza, A (H1N1) 2009, Death, Chiang Dao

Abstract

On 7th February 2014, the Bureau of Epidemiology (BoE) was notified there were 3 deaths caused by Influenza A H1N1 (2009) within a week in Chiang Dao district, Chiang Mai, Thailand. Dead cases investigation was conducted to confirm the outbreak and find the potential fatality risks. Medical record of the confirmed H1N1 (2009) dead cases were reviewed. Healthcare personnel and patients’ families were interviewed for the clinical course. Active case findings and environmental study were conducted among household and neighborhood contacts. Environmental study was also conducted. The morbidity of influenza-like illness (ILI) were 8.8 per 1,000 population and symptomatic case-fatality rate was 4.18 deaths/1,000 ILI cases. There are 3 confirmed H1N1 (2009) deaths without epidemiological linkage. All of them had comorbidities, did not receive flu vaccine and delayed to adequate treatment. Vaccination in high risk group, adequate contact and droplet precaution in family with ILI patients and severity awareness among high risk group were recommended.

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Published

2024-05-18

How to Cite

Taweewigyakarn, P., Kanlayanaphotporn, J., Sangsawang, C., Arunothong, S., Thawillarp, S., Boonyapaisarncharoen, P., Jansiriyakorn, S., Keereesamon, T., Rubthongsuksakul, K., Sonbalee, M., & Pittayawonganon, C. (2024). Influenza A (H1N1) 2009 Dead Cases Investigation in Chiang Dao District, Chiang Mai, Thailand, February 2014. Weekly Epidemiological Surveillance Report, 46(35), 545–552. retrieved from https://he05.tci-thaijo.org/index.php/WESR/article/view/1885

Issue

Vol. 46 No. 35 (2015): 35th week

Section

Original article

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