Contact tracing for COVID-19 in England operated from May 2020 to February 2022. The clinical, demographic and exposure information collected on cases and their contacts offered a unique opportunity to study secondary transmission. We aimed to quantify the relative impact of host factors and exposure settings on secondary COVID-19 transmission risk using 550,000 sampled transmission links between cases and their contacts. Links, or ‘contact episodes’, were established where a contact subsequently became a case, using an algorithm accounting for incubation period, setting, and contact date. A mixed-effects logistic regression model was used to estimate adjusted odds of transmission. Of sampled episodes, 8.7% resulted in secondary cases. Living with a case (71% episodes) was the most significant risk factor (aOR = 2.6, CI = 1.9–3.6). Other risk factors included unvaccinated status (aOR = 1.2, CI = 1.2–1.3), symptoms, and older age (66–79 years; aOR = 1.4, CI = 1.4–1.5). Whilst global COVID-19 strategies emphasized protection outside the home, including education, travel, and gathering restrictions, this study evidences the relative importance of household transmission. There is a need to reconsider the contribution of household transmission to future control strategies and the requirement for effective infection control within households.

Avoidable disasters are both saddening and baffling. In 2022, 159 people, mostly in their 20s, and 30s were crushed to death in Itaewon’s narrow alleyway amid South Korea’s first pandemic-restrictions-free Halloween celebration. What is particularly sobering about this tragedy is that although many people called police hotlines as crowds became cramped and static, their calls went unheeded for hours. Rather than order independent investigations into the catastrophe (as of January 2024), the President of South Korea at the time focused on superficial issues such as asking the public to refer to the disaster as an “accident” (which it was not, it was an avoidable disaster) and the casualties as “the dead” (who are casualties indeed, instead of victims of a preventable tragedy). In this paper, we examine how officials’ complacency about public health and safety dangers, ineffective disaster prevention, and preparedness systems, as well as the government’s chronic lack of prioritization of public health and safety may have contributed to the disaster. Furthermore, we discuss the importance of creating integrated public health and safety protection systems to prevent similar tragedies from happening.

A substantial international body of evidence links housing to health outcomes. In 2021, the World Health Organisation (WHO) evaluated a small selection of policies from its six geographic regions and found that, in Australia as in the rest of the world, existing healthy housing measures fall short of the systemic response required to address health impacts and inequities. This paper takes the novel step of applying Bacchi’s (2009) ‘What is the Problem Represented to Be?’ approach to a wide-ranging thematic analysis of over 300 Australian policies across the domains of health and housing and related policy areas. In so doing, it offers an overview of existing healthy housing policy as well as illuminating the conceptual understandings and priorities of policy makers, shedding light on the policy paradigms that see housing under-utilised as a preventive health and health equity measure.

Women are the fastest-growing population of people who use drugs in the US. As a group, they are more likely than men to experience stigma, poverty, and negative mental health outcomes. This article discusses the unique needs of women drug users in the US and provides suggestions on how to leverage national attention — and federal funding — to make harm reduction services in the US more gender sensitive, and, as a result, more effective in reducing harm for women who use drugs in this country.

Australia’s mandatory vaccination policies have historically allowed for non-medical exemptions (NMEs), but this changed in 2016 when the Federal Government discontinued NMEs for childhood vaccination requirements. Australian states introduced further mandatory vaccination policies during the COVID-19 pandemic for a range of occupations including healthcare workers (HCWs). There is global evidence to suggest that medical exemptions (MEs) increase following the discontinuation of NMEs; the new swathe of COVID-19 mandatory vaccination policies likely also placed further pressure on ME systems in many jurisdictions. This paper examines the state of play of mandatory vaccination and ME policies in Australia by outlining the structure and operation of these policies for childhood vaccines, then for COVID-19, with a case study of HCW mandates. Next, the paper explores HCWs’ experiences in providing vaccine exemptions to patients (and MEs in particular). Finally, the paper synthesizes existing literature and reflects on the challenges of MEs as a pressure point for people who do not want to vaccinate and for the clinicians who care for them, proposing areas for future research and action.

This prospective study examines the immune response to SARS-CoV-2 vaccination in patients with psychotic disorders compared with healthy volunteers. Participants were recruited naturalistically as part of the UK's COVID-19 vaccination programme. Prior to receiving their first COVID-19 vaccine, blood samples were provided by participants to examine anti-SARS-CoV-2 immunoglobulins (IgG) at baseline, followed by a repeat assay 1 month after receiving their first vaccine to assess vaccine response. The increase of IgG levels from baseline to 1 month post-vaccination was significantly lower in patients compared with controls, supporting evidence of impaired vaccine response in people with psychotic disorders. When excluding patients treated with clozapine from the analysis, this difference was no longer significant, suggesting that effects may be particularly marked in people taking clozapine.

This paper considers whether and how managed competition arrangements could be introduced into the Aotearoa health and disability system. The paper describes the key features of the system, including new organisational arrangements established from 1 July 2022. It discusses major reforms and managed competition plans that were developed in the 1990s, with the managed competition plans abandoned fairly early on, as a result of major issues with the reforms that had been implemented and with problems in designing a fair payment system for competing health plans. The paper goes on to argue that the development of capitated, risk-bearing and competing Primary Health Organisations set up in the 2000s should be considered in terms of managed competition, and the paper points to the issues that have arisen in Aotearoa due to a lack of regulations that would have better supported the better achievement of effectiveness, efficiency, and equity goals over the past 20 years. Finally, the paper also looks ahead to whether and how managed competition might again be considered in Aotearoa and the extent to which the system currently includes key pre-conditions to support such arrangements.

Antimicrobial resistance (AMR) remains a critical public health problem that pervades hospitals and health systems worldwide. The ongoing AMR crisis is not only concerning for patient care but also healthcare delivery and quality. This article outlines key components of the origins of AMR in the United States and how it presents across the American healthcare system. Numerous factors contributed to the crisis, including agricultural antibiotic use, wasteful prescribing practices in health care, conflicting behaviours among patients and clinicians, patient demand and satisfaction, and payment and reimbursement models that incentivize inappropriate antibiotic use. To combat AMR, clinicians, healthcare professionals, and legislators must continue to promote and implement innovative solutions, including antibiotic stewardship programmes (ASPs), hand hygiene protocols, ample supply of personal protective equipment (PPE), standardized treatment guidelines for antibiotic prescribing, clinician and patient educational programmes, and health policy initiatives. With the rising prevalence of multi-drug resistant bacterial infections, AMR must become a greater priority to policymakers and healthcare stakeholders.

The Australian health system is characterised by high quality care by international standards, produced by a mix of public and private provision and funding of healthcare services. Despite good overall results, three issues are of concern. The first issue relates to the public procurement of healthcare, whose flaws have impacted individuals' access to care, and the high out-of-pocket spending. The second issue concerns the sustainability of the private health insurance market, given the government's goal of relieving cost and capacity from the public scheme, incentivising participation. Third, there are existing inefficiencies and inequities related to the duplication resulting from the interaction between public and private schemes. To ensure a sustainable, efficient and equitable health system, structural reforms are necessary to achieve long-term performance improvements. Using a framework for mixed public–private health systems, we assess the extent to which the Australian healthcare system achieves preconditions for efficiency and affordability in competitive healthcare markets.

Emerging health crises challenge and overwhelm federal political systems (Greer et al. 2020, Global Public Health 15: 1413–6). Within the context of COVID-19, states and governors took charge in the absence of a coordinated federal response. The result was uneven policy responses and variance in health-related and economic outcomes. While existing research has explored public evaluations of state COVID-19 policies, we explore primary care physicians’ trust in state government for handling the pandemic, as well as their evaluations of their state government’s treatment responsibility for the pandemic and their state’s policy response. We find that general preferences for the role of the federal/state government in addressing the pandemic are shaped by individual-level physician partisanship. Specific evaluations of state policy responsiveness are influenced by whether physicians’ partisan preferences matched their governor. We also find, however, that Republican physicians were critical of Republican governors and physicians were less partisan than the general public. At least within public health, there are limits to the influence of partisan identity on expert (physician) political evaluations.

The Food and Drug Administration’s (FDA) approval to market drug products for use as medical countermeasures, to prevent or mitigate injury caused by various threat agents, is commonly based on evidence of efficacy obtained in animals. Animal studies are necessary when human studies are not feasible and challenge studies are not ethical. The successful development of countermeasures to radio-nuclear threats that cause Acute Radiation Syndrome (ARS) provides the opportunity to explore potential areas of overlap in the scientific approaches to studies of injuries caused by radiation and sulfur mustard exposures in animals. The aim is to evaluate the available scientific knowledge for radiation threat agents and sulfur mustard for potential analogies of fundamental mechanisms of organ injury and dysfunction. This evaluation is needed to determine the applicability of regulatory strategies for product development and approval adopted by manufacturers of countermeasures for radiation threat agents. Key elements of an efficient development plan based on animal efficacy studies include characterizing the pathophysiology of organ injury and the mechanism of action (MOA) of the countermeasure; modeling the clinical condition in animals to establish the manifestations of the injury caused by various levels of exposures to the threat agent and the response to various doses of the countermeasure candidate; as well as selecting a maximally effective human dose.

Developers and vendors of large language models (“LLMs”) — such as ChatGPT, Google Bard, and Microsoft’s Bing at the forefront—can be subject to Health Insurance Portability and Accountability Act of 1996 (“HIPAA”) when they process protected health information (“PHI”) on behalf of the HIPAA covered entities. In doing so, they become business associates or subcontractors of a business associate under HIPAA.

Recently, Congress has focused on reforms to address pharmacy benefit managers’ (PBMs) role in high drug prices for patients. Congress must not excessively restrict PBMs’ ability to negotiate with manufacturers; alternatively, reforms could be paired with other policies that address the high prices of brand-name drugs.