Under the Premiership Rugby regulations, the match between Harlequins and Worcester Warriors will be cancelled.
A Premiership Rugby panel will now be convened to determine the allocation of points and a further announcement will be made in due course.
A Premiership Rugby spokesperson said: "We would never cancel a match lightly, as we understand the consequences but we will always put health and safety first.
"Neither Premiership Rugby nor the club will be naming any of the players or staff involved and we'd ask everyone to respect their privacy."