Skip to main content
. 2021 Jun 23;16(6):e0253175. doi: 10.1371/journal.pone.0253175

Table 1. Data collection phases.

Start End
Phase 1 January 27th (DE) / February 27th (DK, NL, SE1) March 10th
Phase 2 March 11th March 25th
Phase 3 April 11th April 25th

1 While Sweden did see a case on January 31st already, this case did not lead to further contagion. Instead, the Covid-19 outbreak only began in Sweden when the illness was brought there by other travelers on February 27th.