The decision came two days before Spain was to resume use of the AstraZeneca vaccine after the EU's drug regulator deemed the jab "safe and effective".
The number of new infections reported rose above 3,500 on Friday, the highest level since early December, when cases were falling during the second national lockdown.
Earlier this month several EU countries suspended its use, pending a review by the European Medicines Agency (EMA) after dozens of isolated cases of blood clots and brain haemorrhages.
During the current month, at least 22 cases of blood clots have been reported among more than three million people vaccinated in the European Economic Area
AstraZeneca says the safety of the vaccine has been extensively studied in phase III clinical trials and data confirms the vaccine has been generally well tolerated
Transport minister Grant Shapps urged Britons, especially hauliers, not to travel to ports in Kent in southern England, warning on Twitter that "we expect significant disruption in the area".
Sweden's death rate per capita is several times higher than that of its Nordic neighbours but lower than several European countries that opted for lockdowns.
