Hosting Olympic Games under a state of emergency: are people still proud of their country?

The purpose of this research is to identify the fluctuation of national pride during the Tokyo Olympic Games in 2021. Previous research has found that hosting mega sporting events increases national pride. However, the 2020 Tokyo Olympic Games were held under a situation different than that considered by conventional research. The Tokyo Olympic Games faced opposition from public opinion due to the COVID-19 pandemic. This research involved two surveys conducted before and after the Tokyo Olympic Games. The results showed that people's national pride increased. Furthermore, the impact of the Tokyo Olympic Games varied across individuals. Respondents who were anxious about COVID-19 experienced a smaller increase in national pride due to the event than those who were less anxious about COVID-19. This research concludes that hosting mega sporting events can increase national pride, but this effect is limited in the context of severe social issues. The limitations of this research and directions for future research are discussed.

Hosting Olympic Games under a state of emergency: are people still proud of their country?

The purpose of this research is to identify the fluctuation of national pride during the Tokyo Olympic Games in 2021. Previous research has found that hosting mega sporting events increases national pride. However, the 2020 Tokyo Olympic Games were held under a situation different than that considered by conventional research. The Tokyo Olympic Games faced opposition from public opinion due to the COVID-19 pandemic. This research involved two surveys conducted before and after the Tokyo Olympic Games. The results showed that people's national pride increased. Furthermore, the impact of the Tokyo Olympic Games varied across individuals. Respondents who were anxious about COVID-19 experienced a smaller increase in national pride due to the event than those who were less anxious about COVID-19. This research concludes that hosting mega sporting events can increase national pride, but this effect is limited in the context of severe social issues. The limitations of this research and directions for future research are discussed.

Response to COVID-19 during the Tokyo Olympic Games: Did we properly assess the risk?

BACKGROUND: The number of coronavirus disease 2019 (COVID-19) cases was expected to increase during the Tokyo Olympic Games because of the increased physical contact within and between the domestic population and international participants of the Games. The rapid rise of the Delta variant (B.1.617) in Japan meant that hosting the Olympic Games without any restrictions was likely to lead to an increase in cases. We aimed to quantitatively assess possible COVID-19 response strategies for the Olympic Games, comparing the prevalence of severe cases and the cumulative number of COVID-19 deaths via scenario analysis. METHODS: We used a discrete-time deterministic compartmental model structured by age group. Parameters were calibrated using the age-stratified COVID-19 incidence data in Osaka. Numerical simulations incorporated the planned Olympics Games and nationwide COVID-19 vaccination into the proposed model, alongside various subjects and types of countermeasures. RESULTS: Our model-informed approach suggested that having spectators at the Tokyo Olympic Games could lead to a surge in both cases and hospitalization. Projections for the scenario that explicitly incorporated the spread of the Delta variant (i.e., time-dependent increase in the relative transmissibility) showed that imposing stringent social distancing measures (Rt=0.7) for more than 8 weeks from the end of the Olympic Games might be required to suppress the prevalence of severe cases of COVID-19 to avoid overwhelming the intensive care unit capacity in Tokyo. CONCLUSIONS: Our modeling analyses guided an optimal choice of COVID-19 response during and after the Tokyo Olympic Games, allowing the epidemic to be brought under control despite such a large mass gathering.

COVID-19 Risk Assessment for the Tokyo Olympic Games.

Introduction: As of June 7, 2021, the outbreak of Coronavirus Disease 2019 (COVID-19) has spread to more than 200 countries. The global number of reported cases is more than 172.9 million, with more than 3.7 million deaths, and the number of infected individuals is still growing rapidly. Consequently, events and activities around the world were canceled or postponed, and the preparation for sporting events were greatly challenged. Under such circumstances, about 11,000 athletes from ~206 countries are arriving in Tokyo for the 32nd Summer Olympic Games. Therefore, it is urgently necessary to assess the occurrence and spread risk of COVID-19 for the Games. Objectives: To explore effective prevention and control measures for COVID-19 in large international events through simulations of different interventions according to risk assessment. Methods: We used a random model to calculate the number of initial infected patients and used Poisson distribution to determine the number of initial infected patients based on the number of countries involved. Furthermore, to simulate the COVID-19 transmission, the susceptible-exposed-symptomatic-asymptomatic-recovered-hospitalized (SEIARH) model was established based on the susceptible-exposed-infectious-recovered (SEIR) mathematical model of epidemic diseases. According to risk assessment indicators produced by different scenarios of the simulated interventions, the risk of COVID-19 transmission in Tokyo Olympic Games was assessed. Results: The current COVID-19 prevention measures proposed by the Japan Olympic Committee need to be enhanced. And large-scale vaccination will effectively control the spread of COVID-19. When the protective efficacy of vaccines is 78.1% or 89.8%, and if the vaccination rate of athletes reaches 80%, an epidemic prevention barrier can be established.

Predicted dominance of variant Delta of SARS-CoV-2 before Tokyo Olympic Games, Japan, July 2021.

Using numbers of SARS-CoV-2 variants detected in Japan as at 13 June 2021, relative instantaneous reproduction numbers (RRI) of the R.1, Alpha, and Delta variants with respect to other strains circulating in Japan were estimated at 1.25, 1.44, and 1.95. Depending on the assumed serial interval distributions, RRI varies from 1.20-1.32 for R.1, 1.34-1.58 for Alpha, and 1.70-2.30 for Delta. The frequency of Delta is expected to take over Alpha in Japan before 23 July 2021.