England's preparations for Saturday's Calcutta Cup clash at Twickenham have been hit by a bug which swept through the squad during the week.
But head coach Andy Robinson is confident all his players will be fit to start against Scotland in their final game of the RBS 6 Nations after the full squad completed Friday's captain's run at Twickenham.
Robinson said: "We have had a little bit of sickness and diarrhoea but everyone should be alright for tomorrow.
"Andy Hazell had it last Friday and somehow within 24 hours it was going through the squad.
"It's just gone through the squad a little bit. It has just been passed from player to player.
"Danny Grewcock's had a little bit of it, a couple of the Leicester lads had some. But we're okay.''
England are chasing only their second victory of the championship against a Scotland side Robinson is convinced will be tougher than many imagine.
"I have played in one England-Scotland game here in 1989. We drew 12-12 and it was the last time they got close," said Robinson.
England's preparations for the Autumn International series were potentially dealt a further blow as Maro Itoje was forced to undergo an x-ray after Saracens' European victory over Scarlets on Saturday night.