The Riksbank is collecting high-frequency data from external participants to better monitor the economic development during the pandemic. The data is available here: https://c19impact.com/public. Further information about the data collection efforts of the Riksbank is available in their Economic Commentary (in Swedish and English). 

The National Institute of Economic Research (Konjunkturinstitutet) has also expanded their data collection efforts to better monitor the economic development, see https://www.konj.se/statistik-och-data/covid-19-relaterat.html (in Swedish only).

Robert Östling, Stockholm School of Economics