Healthcare workers (HCWs) have faced considerable pressures during the COVID-19 pandemic. For some, this has resulted in mental health distress and disorder. Although interventions have sought to support HCWs, few have been evaluated.

We aimed to determine the effectiveness of the ‘Foundations’ application (app) on general (non-psychotic) psychiatric morbidity.

We conducted a multicentre randomised controlled trial of HCWs at 16 NHS trusts (trial registration number: EudraCT: 2021-001279-18). Participants were randomly assigned to the app or wait-list control group. Measures were assessed at baseline, after 4 and 8 weeks. The primary outcome was general psychiatric morbidity (using the General Health Questionnaire). Secondary outcomes included: well-being; presenteeism; anxiety; depression and insomnia. The primary analysis used mixed-effects multivariable regression, presented as adjusted mean differences (aMD).

Between 22 March and 3 June 2021, 1002 participants were randomised (500:502), and 894 (89.2%) followed-up. The sample was predominately women (754/894, 84.3%), with a mean age of 44⋅3 years (interquartile range (IQR) 34–53). Participants randomised to the app had a reduction in psychiatric morbidity symptoms (aMD = −1.39, 95% CI −2.05 to −0.74), improvement in well-being (aMD = 0⋅54, 95% CI 0⋅20 to 0⋅89) and reduction in insomnia (adjusted odds ratio (aOR) = 0⋅36, 95% CI 0⋅21 to 0⋅60). No other significant findings were found, or adverse events reported.

The app had an effect in reducing psychiatric morbidity symptoms in a sample of HCWs. Given it is scalable with no adverse effects, the app may be used as part of an organisation's tiered staff support package. Further evidence is needed on long-term effectiveness and cost-effectiveness.

Understanding how and under what circumstances a highly effective psychological intervention, improved symptoms of depression is important to maximise its clinical effectiveness.

To address this complexity, we estimate the indirect effects of potentially important mediators to improve symptoms of depression (measured with the Patient Health Questionnaire (PHQ-9)) in the Healthy Activity Program trial.

Interventional in(direct) effects were used to decompose the total effect of the intervention on PHQ-9 scores into the direct and indirect effects. The following indirect effects were considered: characteristics of sessions, represented by the number of sessions and homework completed; behavioural activation, according to an adapted version of the Behavioural Activation for Depression Scale – Short Form; and extra sessions offered to participants who did not respond to the intervention.

Of the total effect of the intervention measured through the difference in PHQ-9 scores between treatment arms (mean difference: −2.1, bias-corrected 95% CI −3.2 to −1.5), 34% was mediated through improved levels of behavioural activation (mean difference: −0.7, bias-corrected 95% CI −1.2 to −0.4). There was no evidence to support the mediating role of characteristics of the sessions nor the extra sessions offered to participants who did not respond to the treatment.

Findings from our robust mediation analyses confirmed the importance of targeting behavioural activation. Contrary to published literature, our findings suggest that neither the number of sessions nor proportion of homework completed improved outcomes. Moreover, in this context, alternative treatments other than extra sessions should be considered for patients who do not respond to the intervention.

There is a growing global awareness of the psychological consequences of long COVID, supported by emerging empirical evidence. However, the emergence and long-term trajectories of psychological symptoms following the infection are still unclear.

To examine when psychological symptoms first emerge following infection with SARS-CoV-2 and the long-term trajectories of psychological symptoms comparing long- and short-COVID groups.

We analysed longitudinal data from the UCL COVID-19 Social Study (March 2020 to November 2021). We included data from adults living in England who reported contracting SARS-CoV-2 by November 2021 (n = 3115). Of these, 15.9% reported having had long COVID (n = 495). They were matched to participants who had short COVID using propensity score matching on a variety of demographic, socioeconomic and health covariates (n = 962 individuals with 13 325 observations) and data were further analysed using growth curve modelling.

Depressive and anxiety symptoms increased immediately following the onset of infection in both long- and short-COVID groups. But the long-COVID group had substantially greater initial increases in depressive symptoms and heightened levels over 22 months follow-up. Initial increases in anxiety were not significantly different between groups, but only the short-COVID group experienced an improvement in anxiety over follow-up, leading to widening differences between groups.

The findings support work on the psychobiological pathways involved in the development of psychological symptoms relating to long COVID. The results highlight the need for monitoring of mental health and provision of adequate support to be interwoven with diagnosis and treatment of the physical consequences of long COVID.

In February 2022, Russia began its invasion of Ukraine. War increases the demand for mental healthcare among affected populations, but with devastating losses across the nation, it is unclear if Ukrainian mental health services are able to meet the needs of the people.

We aimed to evaluate the state of Ukrainian in-patient mental health services, which remains the backbone of the nation's psychiatric services, early in the 2022 Russian invasion.

We conducted a nationwide cross-sectional study on Ukrainian in-patient mental health facilities during the 2022 Russian invasion. Using an online questionnaire, we obtained responses from the heads of 32 in-patient mental health facilities across Ukraine, representing 52.5% of all in-patient mental health facilities in the nation. We gathered information on hospital admissions, staff, humanitarian aid received and the additional needs of each facility.

Hospital admissions were reduced by 23.5% during the war (April 2022) compared with before the war (January 2022). Across facilities, 9.6% of hospital admissions in April 2022 were related to war trauma, with facilities reporting percentages as high as 30.0%. Facilities reported reductions in staff, with 9.1% of total medical workers displaced and 0.5% injured across facilities. One facility reported that 45.6% of their total medical workers were injured. Although facilities across Ukraine have received humanitarian aid (such as medical supplies, food, volunteers), they reported additionally needing equipment as well as more staff.

The mental health service structure in Ukraine has been severely damaged during the 2022 invasion, with staff shortages despite a significant number of hospital admissions related to war trauma.