| Budget Amount *help |
¥24,440,000 (Direct Cost: ¥18,800,000、Indirect Cost: ¥5,640,000)
Fiscal Year 2020: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2019: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2018: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2017: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
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| Outline of Final Research Achievements |
Nonpharmaceutical interventions including case isolation is widely applicable to various infectious diseases to which vaccine and treatment are under development. However, the protective effect of case isolation has not been quantitatively clarified. The present study employed a mathematical approach to quantifying the secondary transmission phenomena as a function fo time since infection in the primary case. Formulating novel models and analyzing empirical epidemiological data, we have explicitly estimated the effectiveness of case isolation. During the project, a pandemic of novel coronavirus disease (COVID-19) started and relevant studies on COVID-19 were also conducted. We have shown that the serial interval of COVID-19 was as short as 5 days, which was close to the value of the incubation period.
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