The latest round of weekly Super League testing for coronavirus has seen 10 people test positive for the virus from 517 Covid-19 tests.
The 10 individuals include players and non-players from five different clubs.
The majority of the positive cases involve Castleford Tigers and Hull Kingston Rovers employees.
The news follows Tuesday’s decision to bring the 2020 play-offs forward after a Covid-19 outbreak at Hull KR saw them end their season early.
It means that 24 positive tests have returned from the 679 tests carried out across Super League since 26 October.