The slowdowns in GDP reported in the UK, the US and the eurozone in recent days give an idea of the economic impact COVID-19 is having.
As important, in piecing together a picture of what is happening to economic activity on the ground, are some of the trading updates released by individual companies.
And few companies can provide as good a picture as AP Moller Maersk, the world's biggest container shipping company, which today updated investors on recent trading
It was not encouraging.