The Omicron wave of the coronavirus has impacted economies worldwide, resulting in a bleak winter. Although restrictions on economic and public life have been less severe than at the beginning of 2021 in many places-mainly due to the progress of vaccination campaigns-and there are prospects of...

The degree of comovement of economic activity across states or regions is an issue of utmost importance to policymakers. Asymmetric business cycles are often seen as an impediment to the formation of a common currency area. However, it has been argued that a common monetary policy in itself...