All three will remain in isolation until the test results are known.
Teammates Sidney Crosby, Beau Bennett and Olli Maatta have already dealt with the illness, which has affected more than a dozen players across the league over the past month.
The Penguins recalled goaltender Jeff Zatkoff from Wilkes-Barre/Scranton of the AHL to serve as the backup to Marc-Andre Fleury when the team faces the Panthers on Monday night.
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