新型コロナウイルス感染症等の感染症サーベイランス体制の抜本的拡充に向けた人材育成と感染症疫学的手法の開発研究(令和 2年度) Human resource development and research on epidemiological methods of infectious disease surveillance for coronaviruses and other infectious diseases, with a view to fundamentally expanding the surveillance system for these diseases