A grounded theory-based qualitative approach for examining local implementation of public health policies during crises.

Background: COVID-19's emergence questions the agility of health policy deployment in a context of urgency. This exceptional pandemic offers a unique Implementation Science study opportunity. It reveals how actors adapt, coordinate, and mitigate an unknown global threat to safeguard populations from an initially mysterious virus.

Local implementation of public health policies revealed by the COVID-19 crisis: the French case.

Background: Improving health system performance depends on the quality of health policy implementation at the local level. However, in general, the attention of researchers is mainly directed towards issues of health policy design and evaluation rather than implementation at the local level. The management of the COVID-19 crisis, especially in Europe, has particularly highlighted the complexity of implementing health policies, decided at the national or supranational level, at the local level.