Health workforce surge capacity during the COVID‐19 pandemic and other global respiratory disease outbreaks: A systematic review of health system requirements and responses

Health system decision‐makers need comprehensive evidence to mitigate surges in the demand for human resources for health (HRH) during infectious disease outbreaks. This study aimed to assess the state of the evidence on policy and planning responses to HRH surge capacity during the coronavirus disease (COVID‐19) pandemic and other viral respiratory disease outbreaks of global significance in the 21st century. We systematically searched eight bibliographic databases to extract primary research articles published between January 2000 and June 2020 capturing temporal changes in health workforce requirements and responses surrounding respiratory virus pandemics. Following the Preferred Reporting Items for Systematic Reviews and Meta‐analyses standard, 16 studies met our inclusion criteria. Five focused on COVID‐19, three on H1N1, and eight modelled a hypothetical pandemic. Investigations of different training, mobilization, and redeployment options to address pandemic‐time health system capacity were reviewed; however, few scenarios drew on observational HRH data, and heterogeneity of study approaches and outcomes generally precluded comparability across contexts. Notable evidence gaps included occupational and psychosocial factors affecting healthcare workers' absenteeism and risk of burnout, gendered considerations of HRH capacity, evaluations in low‐ and lower‐middle income countries, and policy‐actionable assessments to inform post‐pandemic recovery and sustainability of services for noncommunicable disease management.