For the euro zone, the coronavirus is both a negative demand shock and a negative supply shock. Accordingly, how should economic policy respond?
For the euro zone, the coronavirus crisis corresponds to both: A negative demand shock, given the decline in exports to China; A negative supply shock, given the disruption of value chains and probably, eventually, restrictions on the mobility of people in the euro zone. If an economy is hit by both a negative demand shock and a negative supply shock, economic policy must also: Stimulate demand (fiscal deficit, lower interest rates); Stimulate supply (corporate tax cuts, tax incentives for investment).