Title |
Novel measurement of spreading pattern of influenza epidemic by using weighted standard distance method: retrospective spatial statistical study of influenza, Japan, 1999–2009
|
---|---|
Published in |
International Journal of Health Geographics, June 2012
|
DOI | 10.1186/1476-072x-11-20 |
Pubmed ID | |
Authors |
Yugo Shobugawa, Seth A Wiafe, Reiko Saito, Tsubasa Suzuki, Shinako Inaida, Kiyosu Taniguchi, Hiroshi Suzuki |
Abstract |
Annual influenza epidemics occur worldwide resulting in considerable morbidity and mortality. Spreading pattern of influenza is not well understood because it is often hampered by the quality of surveillance data that limits the reliability of analysis. In Japan, influenza is reported on a weekly basis from 5,000 hospitals and clinics nationwide under the scheme of the National Infectious Disease Surveillance. The collected data are available to the public as weekly reports which were summarized into number of patient visits per hospital or clinic in each of the 47 prefectures. From this surveillance data, we analyzed the spatial spreading patterns of influenza epidemics using weekly weighted standard distance (WSD) from the 1999/2000 through 2008/2009 influenza seasons in Japan. WSD is a single numerical value representing the spatial compactness of influenza outbreak, which is small in case of clustered distribution and large in case of dispersed distribution. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
Japan | 1 | 100% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 1 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 3 | 10% |
United Kingdom | 1 | 3% |
Japan | 1 | 3% |
Colombia | 1 | 3% |
Unknown | 24 | 80% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Researcher | 9 | 30% |
Student > Ph. D. Student | 6 | 20% |
Student > Master | 5 | 17% |
Student > Bachelor | 4 | 13% |
Other | 2 | 7% |
Other | 2 | 7% |
Unknown | 2 | 7% |
Readers by discipline | Count | As % |
---|---|---|
Medicine and Dentistry | 5 | 17% |
Environmental Science | 4 | 13% |
Earth and Planetary Sciences | 2 | 7% |
Social Sciences | 2 | 7% |
Agricultural and Biological Sciences | 2 | 7% |
Other | 8 | 27% |
Unknown | 7 | 23% |