Study	Reason for exclusion
Banerjee 2020	Not relevant study design. The paper does briefly describe an intervention, which has been extracted and is summarised in Table 5.
Barrett 2020	Not relevant study design. The paper does briefly describe an intervention, which has been extracted and is summarised in Table 5.
Barroso 2017	Not relevant study design (secondary data analysis); focus on preparedness
Battista 2019	No Intervention
Behan 2020	Not relevant study design. The paper does briefly describe an intervention, which has been extracted and is summarised in Table 5.
Bell 2017	No intervention
Bergeron 2006	No Intervention
Bohan 2020	Not relevant study design. The paper does briefly describe an intervention, which has been extracted and is summarised in Table 5.
Booth 2005	Not relevant study design. The paper does briefly describe an intervention, which has been extracted and is summarised in Table 5.
Chalk 2017	No intervention
Chan 2004	No intervention
Chan‐Yeung 2004	No intervention
Chilton 2016	No intervention
Chou 2010	Not relevant study design. The paper does briefly describe an intervention, which has been extracted and is summarised in Table 5.
Chung 2005	No intervention
Corley 2010	No intervention
Everly 2014	Focused on preparedness
Fukuti 2020	Not relevant study design. The paper does briefly describe an intervention, which has been extracted and is summarised in Table 5.
Gershon 2016	Focused on preparedness
Greenberg 2015	Not relevant study design. The paper does briefly describe an intervention, which has been extracted and is summarised in Table 5.
Liu 2020	Not relevant study design. The paper does briefly describe an intervention, which has been extracted and is summarised in Table 5.
Maltzman 2011	Not specific to pandemic/epidemic
Marrs 2020	Focused on preparedness
Maunder 2010	Focused on preparedness
Meyer 2018	Not relevant study design. The paper does briefly describe an intervention, which has been extracted and is summarised in Table 5.
NCT04324190	Not focused on health professionals
Shen 2020b	Not focused on mental health/resilience
Singh 2020	Not relevant study design. The paper does briefly describe an intervention, which has been extracted and is summarised in Table 5.
Soma 2020	Not focused on mental health/resilience
Sprang 2015	Not relevant study design. The paper does briefly describe an intervention, which has been extracted and is summarised in Table 5.
Tam 2004	No intervention
Taylor 2019	Not relevant study design. The paper does briefly describe an intervention, which has been extracted and is summarised in Table 5.
Vymetal 2011	Not relevant study design. The paper does briefly describe an intervention, which has been extracted and is summarised in Table 5.
Wald 2020	Not relevant study design. The paper does briefly describe an intervention, which has been extracted and is summarised in Table 5.
WHO 2014b	Not relevant study design. The paper does briefly describe an intervention, which has been extracted and is summarised in Table 5.
WHO 2015	Not focused on HCWs mental health/resilience
WHO 2020b	Not relevant study design. The paper does briefly describe an intervention, which has been extracted and is summarised in Table 5.
WHO 2020d	Not relevant study design. The paper does briefly describe an intervention, which has been extracted and is summarised in Table 5.
WHO 2020e	Not relevant study design. The paper does briefly describe an intervention, which has been extracted and is summarised in Table 5.
Xi 2019	Not focused on health professionals
Yuen‐Tsang 2004	Not relevant study design. The paper does briefly describe an intervention, which has been extracted and is summarised in Table 5.

HCW: healthcare worker