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Epidemiological Characterization of Influenza Virus Isolated from Acute Respiratory Illness in Busan, 2004-2005  

Cho, Kyung-Soon (Epidemiology Division, Busan Metropolitan City Institute of Health & Environment)
Park, Sun-Mee (Epidemiology Division, Busan Metropolitan City Institute of Health & Environment)
Kim, Seang-Joon (Epidemiology Division, Busan Metropolitan City Institute of Health & Environment)
Jung, Myung-Ju (Department of Biology, Kyung Sung University)
Lee, Joo-Yeon (Division of Influenza and Respiratory Viruses, National Institute of Health, Korea Center for Disease Control and Prevention)
Kang, Chun (Division of Influenza and Respiratory Viruses, National Institute of Health, Korea Center for Disease Control and Prevention)
Publication Information
Korean Journal of Microbiology / v.43, no.3, 2007 , pp. 173-178 More about this Journal
Abstract
The occurrence of acute respiratory infections caused by the influenza virus are particularly high during the winter season in Busan, Korea. In 2004 and 2005, a study of the rate of occurrences of the influenza virus was conducted. The results reveal that in 2004, of the 1,869 people with an acute respiratory infection that 154 (8.2%) people were infected by the influenza virus. In 2005, of the 1,579 people infected with an acute respiratory infection that 19 people (1.2%) were infected with the influenza virus. The study shows a decrease in the numbers of an influenza virus infection from 2004 to 2005. Data was collected by inspecting throat swabs and nasal discharge from those with an acute respiratory infection. Further inspection of the throat swab and nasal discharge from the infected individuals during 2004 and 2005 study show the occurrence of the different types of influenza virus in the population: 6 cases (3.5%) of influenza type A/H1N1, 129 cases (74.5%) of A/H3N2, and 38 cases (22.0%) of type B. The study conducted in 2004 and 2005 reveal that children between the ages of two and five were more likely to be infected than any other age group. In the study, about 62.2% of the infected individuals were between two and five years old. The detection rates between males and females are similar. However, it is notable that females are slightly more likely to develop an acute respiratory infection caused by the influence virus compared to their male counterparts.
Keywords
A/H1N1; A/H3N2; influenza virus; type B respiratory infection virus;
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