Dynamic and game theory of infectious disease stigmas

Barriers to COVID-19 contact tracing: View from frontline healthcare students in Vietnam

In the context of the complicated continuous waves of the COVID-19 pandemic in Vietnam, contact tracing, along with social distancing and lock-down, proved its crucial role in the suppression of epidemic spreading and management. With the high demand for responsiveness, healthcare students were constantly involved in the process, and challenges have emerged along the way. This study aims to identify the barriers faced by healthcare students while performing the contact tracing task at the frontline of the pandemic. A qualitative study was conducted in July 2021 in a health center in Binh Duong province, Vietnam. A total of 20 healthcare students were invited through random recruitment of participants and interviewed until the principle of saturation was reached. Three main barriers were identified including ineffective work management of local managers, lack of capability of human resources and facilities, and uncooperative attitude of local residents. Given the existing barriers, cooperative, innovative strategies, shared data systems, and timely public awareness campaigns, especially among primary health centers of the healthcare system, are imperative to reduce the workload and optimize the efficacy of healthcare students' support.

Research on Food Safety Control Based on Evolutionary Game Method from the Perspective of the Food Supply Chain

Food safety is related to people’s health and the sustainable development of the food supply chain, so it is of crucial practical significance to study food supply chain quality management. This paper employs the evolutionary game method to develop a tripartite evolutionary game model that reflects the interaction of interests among food raw material suppliers, food manufacturers, and consumers. It identifies the key factors that influence the decision-making of each game participant and attempts to use these factors to guide the behavior of the food supply chain members scientifically. The study results demonstrate that sustainable management of food supply chains can be improved by strengthening the intensity of government supervision, narrowing the production cost gap between high-quality and poor-quality food raw materials, improving the inspection ability of the food manufacturer, increasing complaint incentives of consumers, etc. Finally, this paper puts forward suggestions and countermeasures for the government to improve the supervision mechanism of food safety, thereby achieving sustainable management of the food supply chain.

Modeling the Effect of HIV/AIDS Stigma on HIV Infection Dynamics in Kenya

Stigma toward people living with HIV/AIDS (PLWHA) has impeded the response to the disease across the world. Widespread stigma leads to poor adherence of preventative measures while also causing PLWHA to avoid testing and care, delaying important treatment. Stigma is clearly a hugely complex construct. However, it can be broken down into components which include internalized stigma (how people with the trait feel about themselves) and enacted stigma (how a community reacts to an individual with the trait). Levels of HIV/AIDS-related stigma are particularly high in sub-Saharan Africa, which contributed to a surge in cases in Kenya during the late twentieth century. Since the early twenty-first century, the United Nations and governments around the world have worked to eliminate stigma from society and resulting public health education campaigns have improved the perception of PLWHA over time, but HIV/AIDS remains a significant problem, particularly in Kenya. We take a data-driven approach to create a time-dependent stigma function that captures both the level of internalized and enacted stigma in the population. We embed this within a compartmental model for HIV dynamics. Since 2000, the population in Kenya has been growing almost exponentially and so we rescale our model system to create a coupled system for HIV prevalence and fraction of individuals that are infected that seek treatment. This allows us to estimate model parameters from published data. We use the model to explore a range of scenarios in which either internalized or enacted stigma levels vary from those predicted by the data. This analysis allows us to understand the potential impact of different public health interventions on key HIV metrics such as prevalence and disease-related death and to see how close Kenya will get to achieving UN goals for these HIV and stigma metrics by 2030.

COVID-19-related stigma profiles and risk factors among people who are at high risk of contagion

Rationale

COVID-19 is likely to be stigmatized. The people of Hubei province perceived courtesy and affiliate stigma due to the geographic linkage to COVID-19. Perceived courtesy stigma refers to the perception of stigma of people who are associated with COVID-19 (e.g., the geographic linkage). Affiliate stigma is the internalization and psychological responses of perceived courtesy stigma among the associates.

Objective

The current study aims to reveal different patterns of perceived courtesy and affiliate stigma among people who are at high risk of contagion of COVID-19, and to examine the possible risk factors.

Method

A sample including 2813 adults who located in Hubei Province, China (female: n = 2,184, 77.64%; male: n = 629, 22.36%; mean age = 37.85 years, SD = 6.61 years, range = 18–63 years) were employed in the current study, using latent profile analysis for searching stigma profiles.

Results

Three profiles of stigma were found: the “Denier” (35.98%), “Confused moderate” (48.13%) and “Perceiver” (15.89%) displaying the low, moderate and high level of perceived courtesy and affiliate stigma, respectively. Multinomial logistic regression analyses revealed that generally people with a high level of education, perceived threats, anxiety symptoms, and familiarity with quarantined cases have a high likelihood to be distributed into the “Perceiver”.

Discussion and Conclusions

Our findings highlight the issues of COVID-19-related stigma and provide evidence for launching effective health actions to promote a cohesive society and culture of health. The media can transmit scientific knowledge, promote positive interactions and social cohesion between the stigmatized group and the dominant group, and create spaces for stories that nurture group identification among the implicated people. Future studies should use more representative sample and improve the measures.

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People at high risk of contagion of COVID-19 may experience stigma.

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Stigma may concern perceived courtesy and/or affiliate stigma.

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Three distinct profiles of stigma were identified.

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Risk factors were measured at the interface of individuals and the community.

Voluntary collective isolation as a best response to COVID-19 for indigenous populations? A case study and protocol from the Bolivian Amazon

Indigenous communities worldwide share common features that make them especially vulnerable to the complications of and mortality from COVID-19. They also possess resilient attributes that can be leveraged to promote prevention efforts. How can indigenous communities best mitigate potential devastating effects of COVID-19? In Bolivia, where nearly half of all citizens claim indigenous origins, no specific guidelines have been outlined for indigenous communities inhabiting native communal territories. In this Public Health article, we describe collaborative efforts, as anthropologists, physicians, tribal leaders, and local officials, to develop and implement a multiphase COVID-19 prevention and containment plan focused on voluntary collective isolation and contact-tracing among Tsimane forager-horticulturalists in the Bolivian Amazon. Phase 1 involves education, outreach, and preparation, and phase 2 focuses on containment, patient management, and quarantine. Features of this plan might be exported and adapted to local circumstances elsewhere to prevent widespread mortality in indigenous communities.