Mental health policies and plans (MHPPs) are important policy instruments and powerful tools to facilitate development of mental health systems and services across the world. We aimed to map and analyse methods and tools used to assess the extent, process and impact of implementing MHPPs. We systematically searched peer-reviewed and grey literature across seven scientific databases. We extracted and analysed the data on a) the characteristics of included studies (e.g., policy areas, region of origin, income setting) and b) the methodology and evaluation tools applied to assess the extent and process of implementation. We included 48 studies in the analyses. Twenty-six of these studies employed only qualitative methods (e.g., semi-structured interviews, focus group discussions, desk review, stakeholder consultations); 12 studies used quantitative methods (e.g., trend analysis, survey) and 10 used mixed-methods approaches. Generally, methods and tools used for assessment were described poorly with less than half of the studies providing partial or full details about them. Only three studies provided assessment of full policies. There is a lack of rigorous research to assess implementation MHPPs. Assessments of the implementation of entire MHPPs are almost non-existent. Strategies to assess the implementation of MHPPs should be an integral part of MHPPs.

Gatherings where people are eating and drinking can increase the risk of getting and spreading SARS-CoV-2 among people who are not fully vaccinated; prevention strategies like wearing masks and physical distancing continue to be important for some groups. We conducted an online survey to characterise fall/winter 2020–2021 holiday gatherings, decisions to attend and prevention strategies employed during and before gatherings. We determined associations between practicing prevention strategies, demographics and COVID-19 experience. Among 502 respondents, one-third attended in person holiday gatherings; 73% wore masks and 84% practiced physical distancing, but less did so always (29% and 23%, respectively). Younger adults were 44% more likely to attend gatherings than adults ≥35 years. Younger adults (adjusted prevalence ratio (aPR) 1.53, 95% CI 1.19–1.97), persons who did not experience COVID-19 themselves or have relatives/close friends experience severe COVID-19 (aPR 1.56, 95% CI 1.18–2.07), and non-Hispanic White persons (aPR 1.57, 95% CI 1.13–2.18) were more likely to not always wear masks in public during the 2 weeks before gatherings. Public health messaging emphasizing consistent application of COVID-19 prevention strategies is important to slow the spread of COVID-19.