scholarly journals Vaccination and testing of the border workforce for COVID-19 and risk of community outbreaks: a modelling study

2021 ◽  
Vol 8 (9) ◽  
Author(s):  
Michael J. Plank ◽  
Rachelle N. Binny ◽  
Shaun C. Hendy ◽  
Audrey Lustig ◽  
Kannan Ridings

Throughout 2020 and the first part of 2021, Australia and New Zealand have followed a COVID-19 elimination strategy. Both countries require overseas arrivals to quarantine in government-managed facilities at the border. In both countries, community outbreaks of COVID-19 have been started via infection of a border worker. This workforce is rightly being prioritized for vaccination. However, although vaccines are highly effective in preventing disease, their effectiveness in preventing infection with and transmission of SARS-CoV-2 is less certain. There is a danger that vaccination could prevent symptoms of COVID-19 but not prevent transmission. Here, we use a stochastic model of SARS-CoV-2 transmission and testing to investigate the effect that vaccination of border workers has on the risk of an outbreak in an unvaccinated community. We simulate the model starting with a single infected border worker and measure the number of people who are infected before the first case is detected by testing. We show that if a vaccine reduces transmission by 50%, vaccination of border workers increases the risk of a major outbreak from around 7% per seed case to around 9% per seed case. The lower the vaccine effectiveness against transmission, the higher the risk. The increase in risk as a result of vaccination can be mitigated by increasing the frequency of routine testing for high-exposure vaccinated groups.

2021 ◽  
Vol 15 ◽  
pp. 100256
Author(s):  
Trung Nguyen ◽  
Mehnaz Adnan ◽  
Binh P Nguyen ◽  
Joep de Ligt ◽  
Jemma L Geoghegan ◽  
...  

2021 ◽  
Author(s):  
Leighton M Watson

Aim: The August 2021 COVID-19 outbreak in Auckland has caused the New Zealand government to transition from an elimination strategy to suppression, which relies heavily on high vaccination rates in the population. As restrictions are eased and as COVID-19 leaks through the Auckland boundary, there is a need to understand how different levels of vaccination will impact the initial stages of COVID-19 outbreaks that are seeded around the country. Method: A stochastic branching process model is used to simulate the initial spread of a COVID-19 outbreak for different vaccination rates. Results: High vaccination rates are effective at minimizing the number of infections and hospitalizations. Increasing vaccination rates from 20% (approximate value at the start of the August 2021 outbreak) to 80% (approximate proposed target) of the total population can reduce the median number of infections that occur within the first four weeks of an outbreak from 1011 to 14 (25th and 75th quantiles of 545-1602 and 2-32 for V=20% and V=80%, respectively). As the vaccination rate increases, the number of breakthrough infections (infections in fully vaccinated individuals) and hospitalizations of vaccinated individuals increases. Unvaccinated individuals, however, are 3.3x more likely to be infected with COVID-19 and 25x more likely to be hospitalized. Conclusion: This work demonstrates the importance of vaccination in protecting individuals from COVID-19, preventing high caseloads, and minimizing the number of hospitalizations and hence limiting the pressure on the healthcare system.


2021 ◽  
Author(s):  
◽  
Sophie Maarleveld

<p>This thesis explores an important aspect of the changing composition of United Nations peacekeeping troop contributions by examining the causes of the decline in troop contributions from the West. It does so by creating a theoretical framework within which the widespread decline in troop contributions from the West can be contextualized and reviewing a variety of possible arguments in secondary literature for the decline that can be considered within this theoretical framework. I assert that the constructivist concept of security communities, although originally focused on interactions between states in the community, can also be used to understand the ways in which these states respond to peace and security threats outside of the community, and that this is the reason there has been a systemic decline in troop contributions from the West.  The past, current and future peacekeeping engagements of Canada and New Zealand will be explored in detail in this thesis. These countries have historically had a strong commitment to the UN, and been champions of its ultimate authority to sanction international responses to conflict. Both countries have a history of significant troops contributions to UN peacekeeping, but have decreased these contributions in the last 10-15 years. Understanding why these two internationalists all but abandoned UN peacekeeping can provide clues as to why other Western militaries have done the same, and concentrated their resources in other peace support operations. These cases also exemplify how the security community concept can be applied to understanding troop contributions to peace operations.  This thesis is divided into four main sections. In the introduction I present the research question and discuss its relevance and importance, as well as the salience of the two case studies, followed by the explanation of my theoretical framework, a review of secondary literature on the topic, and the details of my research methodology. In chapter one I explore a variety of arguments that have been made by academics and practitioners regarding the decline in troop contributions from the West. Chapter two covers my first case study – Canada – and chapter three covers New Zealand.  I argue that although the factors that determine countries’ troop contributions are unique and shaped by domestic as much as international circumstances, the wider trend in the West of decreasing troop contributions to UN peacekeeping missions, while increasing troop contributions to non-UN peacekeeping operations can be explained by building on the security community concept. As such, any return to UN peacekeeping is likely to occur throughout the West or not at all. I also argue that in order for the West to re-engage with UN peacekeeping, both Western governments and the UN must take steps towards redefining the parameters of troop participation in UN peace operations.</p>


Thorax ◽  
2020 ◽  
Vol 75 (6) ◽  
pp. 468-475
Author(s):  
Steven S Sadhra ◽  
Nuredin Mohammed ◽  
Om P Kurmi ◽  
David Fishwick ◽  
Sara De Matteis ◽  
...  

BackgroundAlthough around 10% to 15% of COPD burden can be attributed to workplace exposures, little is known about the role of different airborne occupational pollutants (AOP). The main aim of the study was to assess the effect size of the relationship between various AOP, their level and duration of exposure with airflow obstruction (AFO).MethodsA cross-sectional analysis was conducted in 228 614 participants from the UK Biobank study who were assigned occupational exposure using a job exposure matrix blinded to health outcome. Adjusted prevalence ratios (PRs) and 95% CI for the risk of AFO for ever and years of exposure to AOPs were estimated using robust Poisson model. Sensitivity analyses were conducted for never-smokers, non-asthmatic and bi-pollutant model.ResultsOf 228 614 participants, 77 027 (33.7%) were exposed to at least one AOP form. 35.5% of the AFO cases were exposed to vapours, gases, dusts or fumes (VGDF) and 28.3% to dusts. High exposure to vapours increased the risk of occupational AFO by 26%. Exposure to dusts (adjusted PR=1.05; 95% CI 1.01 to 1.08), biological dusts (1.05; 1.01 to 1.10) and VGDF (1.04; 1.01 to 1.07) showed a significantly increased risk of AFO, however, statistically not significant following multiple testing. There was no significant increase in risk of AFO by duration (years) of exposure in current job. The results were null when restricted to never-smokers and when a bi-pollutant model was used. However, when data was analysed based on the level of exposure (low, medium and high) compared with no exposure, directionally there was increase in risk for those with high exposure to vapours, gases, fumes, mists and VGDF but statistically significant only for vapours.ConclusionHigh exposure (in current job) to airborne occupational pollutants was suggestive of higher risk of AFO. Future studies should investigate the relationship between lifetime occupational exposures and COPD.


Facilities ◽  
2016 ◽  
Vol 34 (13/14) ◽  
pp. 809-827 ◽  
Author(s):  
Kevin Quinn Walsh ◽  
Reza Jafarzadeh ◽  
Nicola M. Short ◽  
Jason M. Ingham

Purpose The purpose of this article is to assist facilities asset managers who are dealing with regulatory environments pertaining to earthquakes and buildings. These professionals can learn a great deal from the successes and short-comings of a case study programme from the Auckland Council Property Department (ACPD), which manages the public facilities portfolio for the largest local administrative region in New Zealand in both population and landmass. Design/methodology/approach ACPD has initiated its response to New Zealand’s earthquake mitigation mandates by identifying buildings most at risk to an earthquake in its large and varied portfolio through the use of a rapid building evaluation programme strategically targeted to vulnerable building types with consequential attributes, including service type, number of occupants, floor area and geographic location. Findings ACPD was able to rapidly cull down its portfolio of approximately 3,500 buildings to just over 100 “high-exposure” buildings in urgent need of evaluation, set priorities for future evaluations, estimate needed operational and capital expenditures for long-term planning and provide useful information to more general facilities management decision-making processes. Originality/value A number of major cities around the world in areas of high seismicity have enacted ordinances mandating seismic retrofitting. However, much of the existing guiding literature regarding earthquake-related portfolio evaluations and costs pertains to specific scenarios involving real or hypothetical earthquakes. This case study, in contrast, details the approach taken by a public portfolio owner responding to legal mandates and attempting to quantify and reduce its life-safety risk exposure across a large portfolio as efficiently as possible using readily available information, a rapid building evaluation programme and best-practice predictive models for consulting and construction work.


2021 ◽  
Author(s):  
◽  
Claire Fitzpatrick

<p><b>This dissertation explores the role that hashtags play in maintaining political, social, and technological inequalities in modern society. It argues that the use of what I call ‘collectivising hashtags’, i.e., hashtags characterised by their use of pronouns to inclusively identify with Others, affords new opportunities for self-expression that may simultaneously empower and compromise certain individuals. It is written in response to experiences of racism shared via the #TheyAreUs and #ThisIsNotUs collectivising hashtags that trended following the terror attack on Muslim communities in Ōtautahi, Christchurch in March 2019, and questions commonly held assumptions by privileged users about the non-discriminatory nature of Aotearoa New Zealand politics and society. Using #TheyAreUs and #ThisIsNotUs as my first case study, I demonstrate how collectivising hashtags involve forms of appropriation on the part of privileged users, reinforcing unequal social hierarchies and silencing marginalised bodies. I consider the New Zealand Human Rights Commission’s #ThatsUs campaign in my second case study, assessing the vernacular affordances of social media that enable or restrict affected and affecting bodies’ ability to respond to social and technological inequalities. I also explore the clever and imaginative ways that digital counterpublics subvert online interactions through strategic use of digital architecture, labour, visibility, and invisibility when addressing hashtags and social media platforms as racialised performances of self.</b></p> <p>Users’ everyday online encounters with collectivising hashtags present an opportunity to challenge dominant conceptions of self. Following the critical feminist traditions of Judith Butler, Erinn Gilson, and Kate Schick, my analysis incorporates an ethic of vulnerability in order to interrogate underlying power relations and people’s location within them. My dissertation illustrates how hashtags are technologically created and structured in a way that affords certain bodies more political potential than others. I show that everyday performances of self via collectivising hashtag practices have the political potential to formatively shift who qualifies as ‘human.’To assess the affordances of collectivising hashtags, I used a multimodal analytic technique developed by André Brock called Critical Technocultural Discourse Analysis. I also conducted in-depth interviews with hashtag users and analysed the soft structures of digital networks, social media platforms and processes, and hashtag functionalities and their affects. Drawing on Melissa Harris-Perry’s concept of the Crooked Room, I assert that collectivising hashtags operate within a ‘crooked platform’ which problematises the recognition of marginalised bodies. This analysis encourages users to think critically about the affecting nature of their online practices and privileges, or risk becoming complicit in the wider relations of power in which discrimination, oppression, and violence fester. As privileged users develop new practices of digital reconstitution in which an embodied online praxis is conceived in affective terms, I argue that they can instead embrace their own vulnerability, alterity, and precariousness, and move towards a fuller conception of what it means to be human.</p>


2021 ◽  
Author(s):  
◽  
Sophie Maarleveld

<p>This thesis explores an important aspect of the changing composition of United Nations peacekeeping troop contributions by examining the causes of the decline in troop contributions from the West. It does so by creating a theoretical framework within which the widespread decline in troop contributions from the West can be contextualized and reviewing a variety of possible arguments in secondary literature for the decline that can be considered within this theoretical framework. I assert that the constructivist concept of security communities, although originally focused on interactions between states in the community, can also be used to understand the ways in which these states respond to peace and security threats outside of the community, and that this is the reason there has been a systemic decline in troop contributions from the West.  The past, current and future peacekeeping engagements of Canada and New Zealand will be explored in detail in this thesis. These countries have historically had a strong commitment to the UN, and been champions of its ultimate authority to sanction international responses to conflict. Both countries have a history of significant troops contributions to UN peacekeeping, but have decreased these contributions in the last 10-15 years. Understanding why these two internationalists all but abandoned UN peacekeeping can provide clues as to why other Western militaries have done the same, and concentrated their resources in other peace support operations. These cases also exemplify how the security community concept can be applied to understanding troop contributions to peace operations.  This thesis is divided into four main sections. In the introduction I present the research question and discuss its relevance and importance, as well as the salience of the two case studies, followed by the explanation of my theoretical framework, a review of secondary literature on the topic, and the details of my research methodology. In chapter one I explore a variety of arguments that have been made by academics and practitioners regarding the decline in troop contributions from the West. Chapter two covers my first case study – Canada – and chapter three covers New Zealand.  I argue that although the factors that determine countries’ troop contributions are unique and shaped by domestic as much as international circumstances, the wider trend in the West of decreasing troop contributions to UN peacekeeping missions, while increasing troop contributions to non-UN peacekeeping operations can be explained by building on the security community concept. As such, any return to UN peacekeeping is likely to occur throughout the West or not at all. I also argue that in order for the West to re-engage with UN peacekeeping, both Western governments and the UN must take steps towards redefining the parameters of troop participation in UN peace operations.</p>


2020 ◽  
Vol 32 (4) ◽  
pp. 8-25
Author(s):  
Polly Yeung ◽  
Nicole Robertson ◽  
Lucy Sandford-Reed

PURPOSE: Given the benefits of the human–animal bond (HAB), animals are being used in a range of social work settings. It is important to gain a more in-depth understanding of social work practitioners’ knowledge and actions in these interactions. The purpose of this study was to examine the views and knowledge of social workers in relation to the HAB in Aotearoa New Zealand. METHODS: A survey using an online portal was administrated to qualified social workers via professional and community networks to assess their exposure, level of knowledge, support, training, and barriers to animal–human relations. RESULTS: A total of 140 questionnaires were used for analysis. The results, similar to findings from Canada and the United States, indicate that social workers seemed to have high exposure to information about the benefits of HAB and understanding of the connections between animal abuse and child abuse/domestic violence. Only 68% have included animals in their social work practice. The vast majority have had no specific training in HAB. Untested or untrained animals were also reported to have been used in social work intervention practice. The lack of clear workplace policies, support and professional training in HAB were key barriers that inhibited the inclusion of animals in practice. CONCLUSIONS: Lack of understanding over how to include HAB in practice has serious implications for social work. HAB continues to influence and contribute to the lives of families and individuals and social workers have a duty to develop general awareness and knowledge of the benefits to human health and wellbeing of interacting with animals.


2008 ◽  
Vol 14 (2) ◽  
pp. 183-204
Author(s):  
Sarah Baker ◽  
Jeanie Benson

In 2005 and 2007, two high profile crimes were reported in the New Zealand media. The first case invovled the murder of a young Chinese student, Wan Biao, whose dismembered body was discovered in a suitcase. The second case involved domestic violence in which a Chinese man murdered his wife and fled the scene with their young daughter— who the press later dubbed 'Pumpkin' when she was found abandoned in Melbourne, Australia. The authors discuss how news and current affairs programmes decontextualise 'Asian' stories to portray a clear divide between the 'New zealand' public and the separate 'Asian other'. Asians are portrayed as a homogenous group and the media fails to distinguish between Asians as victims of crimes as a separate category to Asians as perpetrators of crimes. This may have consequences for the New Zealand Asian communities and the wider New Zealand society as a whole. 


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