Background Growing political attention to antimicrobial resistance (AMR) offers a rare opportunity for achieving meaningful action. Many governments have developed national AMR action plans, but most have not yet implemented policy interventions to reduce antimicrobial overuse. A systematic evidence map can support governments in making evidence-informed decisions about implementing programs to reduce AMR, by identifying, describing, and assessing the full range of evaluated government policy options to reduce antimicrobial use in humans. Methods and findings Seven databases were searched from inception to January 28, 2019, (MEDLINE, CINAHL, EMBASE, PAIS Index, Cochrane Central Register of Controlled Trials, Web of Science, and PubMed). We identified studies that (1) clearly described a government policy intervention aimed at reducing human antimicrobial use, and (2) applied a quantitative design to measure the impact. We found 69 unique evaluations of government policy interventions carried out across 4 of the 6 WHO regions. These evaluations included randomized controlled trials ( n = 4), non-randomized controlled trials ( n = 3), controlled before-and-after designs ( n = 7), interrupted time series designs ( n = 25), uncontrolled before-and-after designs ( n = 18), descriptive designs ( n = 10), and cohort designs ( n = 2). From these we identified 17 unique policy options for governments to reduce the human use of antimicrobials. Many studies evaluated public awareness campaigns ( n = 17) and antimicrobial guidelines ( n = 13); however, others offered different policy options such as professional regulation, restricted reimbursement, pay for performance, and prescription requirements. Identifying these policies can inform the development of future policies and evaluations in different contexts and health systems. Limitations of our study include the possible omission of unpublished initiatives, and that policies not evaluated with respect to antimicrobial use have not been captured in this review. Conclusions To our knowledge this is the first study to provide policy makers with synthesized evidence on specific government policy interventions addressing AMR. In the future, governments should ensure that AMR policy interventions are evaluated using rigorous study designs and that study results are published. Protocol registration PROSPERO CRD42017067514 .

There are over 250,000 international treaties that aim to foster global cooperation. But are treaties actually helpful for addressing global challenges? This systematic field-wide evidence synthesis of 224 primary studies and meta-analysis of the higher-quality 82 studies finds treaties have mostly failed to produce their intended effects. The only exceptions are treaties governing international trade and finance, which consistently produced intended effects. We also found evidence that impactful treaties achieve their effects through socialization and normative processes rather than longer-term legal processes and that enforcement mechanisms are the only modifiable treaty design choice with the potential to improve the effectiveness of treaties governing environmental, human rights, humanitarian, maritime, and security policy domains. This evidence synthesis raises doubts about the value of international treaties that neither regulate trade or finance nor contain enforcement mechanisms.

Background: Many countries are currently rethinking their global health research funding priorities. When resources are limited, it is important to understand and use information about existing research strengths to inform research strategies and investments and to drive impact. This study describes a method to rapidly assess a country's global health research expertise and applies this method in the Canadian context. Methods: We developed a three-pronged rapid environmental scan to evaluate Canadian global health research expertise that focused on research funding inputs, research activities and research outputs. We assessed research funding inputs from Canada's national health research funding agency and identified the 30 Canadian universities that received the most global health research funding. We systematically searched university websites and secondary databases to identify research activities, including research centres, research chairs and research training programmes. To evaluate research outputs, we searched PubMed to identify global health research publications by Canadian university-affiliated researchers. We used these three perspectives to develop a more nuanced understanding of Canadian strengths in global health research from different perspectives. Results: Canada's main global health research funder, the Canadian Institutes of Health Research, invested a total of $314 M from 2000 to 2016 on global health research grants. This investment has contributed to Canada's wealth of global health research expertise, including 12 training programmes, 27 Canada Research Chairs, 6 research centres and 30 WHO Collaborating Centres across 27 universities. Research activities were concentrated in Canada's biggest cities and most commonly focused on health equity and globalisation issues. Canadian-affiliated researchers have contributed to a research output of 822 unique publications on PubMed. There is an opportunity to build global health expertise in regions not already concentrated with research activity, focusing on transnational risks and neglected conditions research.