This postpones the New York derby against Rangers, which was to be played during the night until Monday Swedish time.
The team's match against the Philadelphia Flyers has also been postponed due to covid in the team.
In the losing game against Pittsburgh (0-1), strikers Anders Lee, Kieffer Bellows and Ross Johnston were on the covid list as well as defenders Adam Pelech, Andy Greene and Zdeno Chara.
Forward Josh Bailey could be written off from that record the same day but did not play - and now Casey Cizikas has instead tested positive and taken Bailey's place on the list.
Islanders general manager Lou Lamoriello also confirms that three other people in the squad tested positive for covid-19.
The Islanders will also close their training facility for the next three days.