Andrew Strauss and Graeme Swann returned to training the day before England's must-win World Cup showdown with West Indies - but Ajmal Shahzad was absent after becoming the latest squad member to be struck down by a stomach bug sweeping the camp.
Captain Strauss and off-spinner Swann both missed practice on Tuesday with the same problem now afflicting Shahzad but, 24 hours on, had recovered sufficiently to go through their paces with their team-mates on the outfield of the MA Chidambaram Stadium in Chennai.
"I'm feeling very well now," said Strauss ahead of Wednesday afternoon's practice session.
"I was laid low the night before last and yesterday morning.
"Graeme Swann is recovering well and should be practising today. I don't know if he is quite as buoyant as I am, but we're still very confident he'll be fine for tomorrow.
"Ajmal Shahzad has been struck by it as well and he probably will not practise today.
"We're not sure at this stage whether that is going to affect his chances of being selected tomorrow."
Shahzad took three wickets in England's shock defeat to Bangladesh in Chittagong on Friday, a result which means they must beat the Windies to have any chance of progressing from Group B to the quarter-finals.
Doubts over the Yorkshire seamer's fitness may reopen the door to pace spearhead James Anderson, even though the Ashes hero has looked fatigued during recent matches after such an arduous winter.
Strauss, however, declined to shed any light on selection issues before match day.