New Research on the impact of Covid-19, spanning 42 low- and middle-income counties, has identified macroeconomic and social policies required to build resilience against future health shocks and environmental emergencies. As world leaders meet at the International Monetary Fund (IMF) and World Bank Group Annual Meetings in Washington DC this week, a body of evidence from the Covid Research for Equity Programme (CORE), synthesised by the Institute of Development Studies, provides a clear case for coordinated fiscal measures that target the most vulnerable.