Magnus Karlsson, editor-in-chief at the daily Smalandsposten said on its website that he doesn't want the newspaper's brand "to be spread with a potentially viral and erroneous story".
"We work with real news. Even on April 1st," he said.
The "fake news" phenomenon broke out amid the 2016 US presidential election and grew even further when Donald Trump, during his first press conference on January 11 as then president-elect, shouted at a CNN reporter: "You are fake news!"
Now, several local daily Swedish newspapers including Dalarnas Tidningar, Hallpressen and Vasterbottens-Kuriren have refrained from publishing April Fools' Day jokes.
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"Historically, we've had super successful April Fools jokes. But because of debates and discussions about the media's credibility being connected to fake news, we didn't want to do it this year," Ingvar Naslund, editor-in-chief at Vasterbottens-Kuriren told TT.
In neighbouring Norway, the largest media organisations such as public broadcaster NRK, newspaper Aftenposten, VG and Dagbladet have also abandoned this old tradition.
NRK said local newspapers would follow suit.
Oyulf Hjertenes, editor at the local daily Bergens Tidende, told NRK that in a climate where "false news is spreading, it would be a mistake on our part" to publish jokes on April 1.
Kristin Monstad, publishing editor at Drammens Tidende, added: "What is written in Drammens Tidende must be true.