Epidemiological study on influenza seasonality and an association with its dynamics in school children

2018 Fiscal Year Final Research Report

• Project/Area Number: 15H05281
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 海外学術
• Research Field: Epidemiology and preventive medicine
• Research Institution: Tohoku University
• Principal Investigator: Kamigaki Taro 東北大学, 医学系研究科, 助教 (80451524)
• Research Collaborator: OTOMARU HIRONO ; OKAMOTO MICHIKO ; OSHITANI HITOSHI ; Chaw Liling ; Alexander Burmaa ; Oyungerel Darmaa ; Nymadawa Pagbajab ; Alday Portia ; Tan Alvin ; Tallo Veronica
• Project Period (FY): 2015-04-01 – 2019-03-31
• Keywords: インフルエンザ / 学童 / 季節性

Outline of Final Research Achievements

Although disease burden of influenza in Asian developing countries is similar to that in developed countries, its epidemic characteristics (especially seasonality) is very different. In this study, we conducted epidemiological studies of influenza in two countries; the Philippines and Mongolia. In the Philippines, we calculated incidence rate by considering a fraction of health seeking and revealed that it could increase up to three times. In Mongolia, a field study was conducted in a suburb district of Ulaanbaatar, and it was revealed that the frequency of tachycardia is significantly higher in hospitalized children with influenza compared with respiratory rates and SpO2 measurement. In addition, we found that the highest number of outpatient children with influenza was 1-4 years old than that in school children.

Free Research Field

感染症疫学

Academic Significance and Societal Importance of the Research Achievements

本研究ではアジアにおける2つの国におけるフィールド調査によりインフルエンザの疾病負荷と季節席を明らかにしたところに意義があると考えられる。最初に設定した学童での流行動態によってインフルエンザの流行と季節性については明確な関連性を示し得なかった。更なる解析を実施する予定であるが、感染拡大を誘因する別な要因についても検討が必要であると考えられる。