MOTALA, Sweden—While much of Europe and the U.S. have endured strict government-imposed lockdowns, Josefine Sandblom has been free to savor the Scandinavian spring and lounge in restaurants in her hometown here, a popular lakeside vacation destination.

But Ms. Sandblom, like many Swedes, has chosen not to. She keeps 6 feet away from colleagues in the factory where she works and stays home the rest of the time. She takes a dim view of the young people crowding bars in the capital, Stockholm.

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