Sweden on July 15th advised its citizens against traveling to Switzerland. On July 29th, Sweden rescinded the order, effective immediately.
A government representative confirmed to Swiss media in mid-July that the move was a political retaliation for Switzerland's mandatory quarantine of arrivals from Sweden.
‘We advise you not to travel': Sweden retaliates against Switzerland's quarantine order
Despite relatively similar infection rates, Sweden removed travel warnings for France, Germany and Italy but kept the advice in place for arrivals from Switzerland.
Switzerland announced a quarantine for arrivals from ‘high risk’ countries from July 6th onwards, with Sweden put on the list due to its high infection rate.
When revising the list on July 22nd, Sweden was removed.