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Abstract: Since the recent introduction of several viable vaccines for SARS-CoV-2, vaccination uptake has become the key factor that will determine our success in containing the COVID-19 pandemic. We argue that game theory and social network models should be used to guide decisions pertaining to vaccination programmes for the best possible results. In the months following the introduction of vaccines, their availability and the human resources needed to run the vaccination programmes have been scarce in many countries. Vaccine hesitancy is also being encountered from some sections of the general public. We emphasize that decision-making under uncertainty and imperfect information, and with only conditionally optimal outcomes, is a unique forte of established game-theoretic modelling. Therefore, we can use this approach to obtain the best framework for modelling and simulating vaccination prioritization and uptake that will be readily available to inform important policy decisions for the optimal control of the COVID-19 pandemic.
Keywords: COVID-19, evolutionary game theory, digital epidemiology, vaccination, social network, public goods game, social physics
Published in DKUM: 28.02.2025; Views: 0; Downloads: 3
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Abstract: We propose and study an epidemiological model on a social network that takes into account heterogeneity of the population and different vaccination strategies. In particular, we study how the COVID-19 epidemics evolves and how it is contained by different vaccination scenarios by taking into account data showing that older people, as well as individuals with comorbidities and poor metabolic health, and people coming from economically depressed areas with lower quality of life in general, are more likely to develop severe COVID-19 symptoms, and quicker loss of immunity and are therefore more prone to reinfection. Our results reveal that the structure and the spatial arrangement of subpopulations are important epidemiological determinants. In a healthier society the disease spreads more rapidly but the consequences are less disastrous as in a society with more prevalent chronic comorbidities. If individuals with poor health are segregated within one community, the epidemic outcome is less favorable. Moreover, we show that, contrary to currently widely adopted vaccination policies, prioritizing elderly and other higher-risk groups is beneficial only if the supply of vaccine is high. If, however, the vaccination availability is limited, and if the demographic distribution across the social network is homogeneous, better epidemic outcomes are achieved if healthy people are vaccinated first. Only when higher-risk groups are segregated, like in elderly homes, their prioritization will lead to lower COVID-19 related deaths. Accordingly, young and healthy individuals should view vaccine uptake as not only protecting them, but perhaps even more so protecting the more vulnerable socio-demographic groups.
Keywords: epidemic model, COVID-19, vaccination strategy, vaccination strategy, population heterogeneity, socio-demographic structure, metabolic disease, social network
Published in DKUM: 14.11.2024; Views: 0; Downloads: 12
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Abstract: While the problem of vaccine hesitancy is not new, it has become more pronounced with the new COVID-19 vaccines and represents an obstacle to resolving the crisis. Even people who would usually trust vaccines and experts now prefer to wait for more information. A cross-sectional online survey was conducted in Slovenia in December 2020 to find out the attitudes of the population regarding COVID-19 vaccination and the factors that affect these attitudes. Based on 12,042 fully completed questionnaires, we find that higher intention to get vaccinated is associated with men, older respondents, physicians and medical students, respondents who got the influenza vaccination, those who knew someone who had gotten hospitalised or died from COVID-19 and those who have more trust in experts, institutions and vaccines. Nurses and technicians were less likely to get vaccinated. In answers to an open question, sceptics were split into those doubting the quality due to the rapid development of the vaccine and those that reported personal experiences with side effects of prior vaccinations. Although the Slovenian population is diverse in its attitudes towards vaccination, the results are comparable to those found in other countries. However, there are potential limitations to the generalizability of the findings that should be addressed in future studies.
Keywords: cross-sectional studies, intention, public opinion, trust, ordinal regression, COVID-19, vaccination, surveys and questionnaires, Europe, immune system, SARS-CoV-2
Published in DKUM: 10.10.2024; Views: 0; Downloads: 10
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Abstract: Background/aim: The COVID-19 pandemic majorly disrupted conventional schooling and many countries maintained educational services through distance education. The duration of school closures in Turkey was longer than most OECD countries, thus Turkey prioritized school reopenings in the 2021-2022 academic year to mitigate possible negative outcomes of closures. Here we study the compatibility of implications for school reopenings in Turkey with these practices and assess the first semester of face-to-face schooling. Materials and methods: We have used document analysis to present and compare the practices in Turkey with international practices. We also used a comparative approach to assess the coherence between policies in Turkey and international suggestions. Results: We find that vaccination rates of teachers and education staff are quite high in Turkey. Other practices, mandatory face masks, class-based closures and quarantine policies, are also in agreement with international practices. These steps are supported with frequent cleaning and ventilation of school environments, as well as with social distancing measures in schools. Conclusion: Consequently, the rate of daily closed classrooms has been kept below 1%, and the patterns of closures and openings are in general agreement with the changes of positive cases in the Turkish society. The net rate of closed classrooms decreased with the decline of quarantine days in Turkey. We hope that these insights will inform about school openings and contribute to best practices for faceto-face schooling.
Keywords: school system, school reopening, face-to-face education, COVID-19, educational equality, vaccination
Published in DKUM: 11.07.2024; Views: 100; Downloads: 5
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Abstract: The aim of the present study was to explore the infuence of anxiety and fear of COVID-19 on vaccination hesitancy among Slovenian postsecondary students. A cross-sectional study using a set of previously tested instruments and ad hoc questions created by the authors was chosen as the method to gain insight into various health and sociodemographic aspects of Slovenian postsecondary students afected by the COVID-19-induced closures and suspensions of educational activities at tertiary educational institutions (N= 5999). Overall, 39.7% of participating students expressed an intention to get vaccinated at the frst possible opportunity, whereas 29.2% expressed no intent to do so. The highest vaccine hesitancy was observed among prospective teachers (50.3%) and the lowest among prospective physicians (5,7%). When examining the role of anxiety and fear of COVID-19 on the Slovenian postsecondary students' intentions to get vaccinated the results of logistic regression showed that only fear of COVID-19 played a mild and signifcant role.
Keywords: vaccination, health care, health occupations, medical research, risk factors, signs and symptoms, students
Published in DKUM: 05.07.2024; Views: 111; Downloads: 9
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