Karimi has lived and trained in the United States since 2016, with his citizenship having been recently confirmed.

Karimi, who was born in Afghanistan, served as one of the flagbearers for the Refugee Paralympic Team at the Tokyo 2020 Paralympic Games last year.

He is set to participate in the third World Championships of his career, with competition scheduled to take place at Madeira in Portugal during June.

The 25-member US team has been confirmed following the Para Swimming World Series in Indianapolis.

Paralympic silver medallist Leanne Smith achieved three world records at the event, where she competed in five events.

Smith will be joined in the US team by 29-time Paralympic medallist Jessica Long.

Paralympic champions Anastasia Pagonis, McKenzie Coan, Elizabeth Marks, Morgan Stickney, Mikaela Jenkins, Hannah Aspden, Mallory Weggemann and Gia Pergolini have also been named in the team.

Paralympic medallists Colleen Young, Elizabeth Smith, Sophia Herzog, Julia Gaffney and Ahalya Lettenberger are also set to compete in Madeira.

McClain Hermes, Summer Schmit and teenager Audrey Kim have been selected.

Robert Griswold, who won S8 100 metres backstroke and butterfly gold at Tokyo 2020, will lead the men's team at the World Championships.

Matthew Torres and Jamal Hill will join Griswold in the team, while Rudy Garcia-Tolson will compete at the Para Swimming World Championships for the final time before switching full-time to Para triathlon.

Parker Egbert and Morgan Ray will make their World Championship debuts in Portugal, although the pairing have competed at the Paralympic Games and Parapan American Games, respectively.

"The Para Swimming World Series in Indianapolis served as the first major international competition post Tokyo for many of our athletes," said Erin Popovich, director of US Paralympics Swimming.

"The athletes named to the world championship roster stepped up, performed well and earned their ticket to Portugal.

"This is a team largely composed of veteran athletes who have raced on the world’s biggest stages, and we look to them to lead the way for the up-and-coming athletes making their world championship debut."

The 2022 Para Swimming World Championships will take place from June 12 to 18.

Competition will take place at the Penteada Olympic Swimming Complex in Madeira.

London hosted the 2019 World Championships, which featured 637 athletes from 77 nations.