| Clusters of coronavirus disease in communities, Japan, January–April 2020 Y Furuse, E Sando, N Tsuchiya, R Miyahara, I Yasuda, YK Ko, M Saito, ... Emerging infectious diseases 26 (9), 2176, 2020 | 296 | 2020 |
| Epidemiology of COVID-19 outbreak in Japan, January–March 2020 Y Furuse, YK Ko, M Saito, Y Shobugawa, K Jindai, T Saito, H Nishiura, ... Japanese journal of infectious diseases, JJID. 2020.271, 2020 | 106 | 2020 |
| Relationship of test positivity rates with COVID-19 epidemic dynamics Y Furuse, YK Ko, K Ninomiya, M Suzuki, H Oshitani International journal of environmental research and public health 18 (9), 4655, 2021 | 31 | 2021 |
| Familial clusters of coronavirus disease in 10 prefectures, Japan, February− May 2020 R Miyahara, N Tsuchiya, I Yasuda, YK Ko, Y Furuse, E Sando, S Nagata, ... Emerging infectious diseases 27 (3), 915, 2021 | 30 | 2021 |
| Number of averted COVID-19 cases and deaths attributable to reduced risk in vaccinated individuals in Japan T Kayano, M Sasanami, T Kobayashi, YK Ko, K Otani, M Suzuki, ... The Lancet Regional Health–Western Pacific 28, 2022 | 26 | 2022 |
| Epidemiology of coronavirus disease 2019 in Japan: descriptive findings and lessons learned through surveillance during the first three waves Y Arima, K Kanou, T Arashiro, YK Ko, K Otani, Y Tsuchihashi, T Takahashi, ... JMA journal 4 (3), 198-206, 2021 | 23 | 2021 |
| Roles of children and adolescents in COVID-19 transmission in the community: a retrospective analysis of nationwide data in Japan T Imamura, M Saito, YK Ko, T Imamura, K Otani, H Akaba, K Ninomiya, ... Frontiers in Pediatrics 9, 705882, 2021 | 22 | 2021 |
| COVID-19 case-clusters and transmission chains in the communities in Japan Y Furuse, N Tsuchiya, R Miyahara, I Yasuda, E Sando, YK Ko, T Imamura, ... The Journal of infection 84 (2), 248, 2022 | 16 | 2022 |
| Secondary transmission of SARS-CoV-2 during the first two waves in Japan: demographic characteristics and overdispersion YK Ko, Y Furuse, K Ninomiya, K Otani, H Akaba, R Miyahara, T Imamura, ... International Journal of Infectious Diseases 116, 365-373, 2022 | 14 | 2022 |
| Age-Dependent Effects of COVID-19 Vaccine and of Healthcare Burden on COVID-19 Deaths, Tokyo, Japan YK Ko, H Murayama, L Yamasaki, R Kinoshita, M Suzuki, H Nishiura Emerging Infectious Diseases 28 (9), 1777, 2022 | 8 | 2022 |
| Replacement of SARS-CoV-2 strains with variants carrying N501Y and L452R mutations in Japan: an epidemiological surveillance assessment Y Kobayashi, T Arashiro, M Otsuka, Y Tsuchihashi, T Takahashi, Y Arima, ... Western Pacific Surveillance and Response Journal: WPSAR 13 (3), 1, 2022 | 8 | 2022 |
| SARS-CoV-2 Variants and Age-Dependent Infection Rates among Household and Nonhousehold Contacts R Miyahara, K Tamura, T Kato, M Nakazaki, K Otani, YK Ko, T Kamigaki, ... Emerging Infectious Diseases 29 (8), 1648, 2023 | 5 | 2023 |
| Impact of the Coming‐of‐Age Day and ceremony on the risk of SARS‐CoV‐2 transmission in Japan: A natural‐experimental study based on national surveillance data YK Ko, R Kinoshita, M Yamauchi, K Otani, T Kamigaki, K Kasuya, ... Influenza and Other Respiratory Viruses 16 (6), 1026-1032, 2022 | 4 | 2022 |
| Evaluating the COVID-19 vaccination program in Japan, 2021 using the counterfactual reproduction number T Kayano, Y Ko, K Otani, T Kobayashi, M Suzuki, H Nishiura Scientific Reports 13 (1), 17762, 2023 | 3 | 2023 |
| Epidemiological factors associated with COVID-19 clusters in medical and social welfare facilities T Imamura, YK Ko, Y Furuse, T Imamura, K Jindai, R Miyahara, E Sando, ... Jpn J Infect Dis, 281-287, 2022 | 3 | 2022 |
| Integration of publicly available case-based data for real-time coronavirus disease 2019 risk assessment, Japan K Ninomiya, M Kanamori, N Ikeda, K Jindai, YK Ko, K Otani, Y Furuse, ... Western Pacific surveillance and response journal: WPSAR 13 (1), 1, 2022 | 2 | 2022 |
| Secondary attack rates of SARS-CoV-2 alpha and delta variants in Japan R Miyahara, K Tamura, T Kato, K Otani, YK Ko, Y Arima, H Tani, K Oishi, ... | 1 | 2022 |
| Evaluating the Age-Specific Effectiveness of COVID-19 Vaccines Against Death and the Impact of Healthcare Burden on Age-Specific Case Fatality Risk in Tokyo, Japan YK Ko, H Murayama, L Yamasaki, R Kinoshita, M Suzuki, H Nishiura Japan, 2022 | 1 | 2022 |
| Unraveling the “indirect effects” of interventions against malaria endemicity: A systematic scoping review YK Ko, W Kagaya, CW Chan, M Kanamori, SM Mbugua, AK Rotich, ... medRxiv, 2024.05. 08.24307059, 2024 | | 2024 |
| Evaluation of the protective efficacy of OlysetPlus ceiling nets for reduction of malaria incidence in children in Homa Bay County, Kenya: a cluster-randomized controlled study … YK Ko, W Kagaya, P Omondi, KB Musyoka, T Okai, CW Chan, J Kongere, ... medRxiv, 2024.04. 20.24306116, 2024 | | 2024 |
