Twelve players have been added to the Ireland 6 Nations squad ahead of Saturday week's Lansdowne Road tussle with Scotland.
Those players include - Forwards - Neil Best (Ulster), Reggie Corrigan (Leinster), Anthony Foley (Munster), Keith Gleeson (Leinster), Jamie Heaslip (Leinster), Matt McCullough (Ulster) and Bryan Young (Ulster), and Backs - Tommy Bowe (Ulster), Denis Hickie (Leinster), Robert Kearney (Leinster), John Kelly (Munster) and Barry Murphy (Munster).
All twelve have linked up in camp with the majority of the 22-man squad that was selected for the weekend's win against Wales. The extended squad are due to train this afternoon at St. Gerard's School in Bray.
Meanwhile, Ireland coach Eddie O'Sullivan issued an update on his injury concerns at Monday's press briefing. The Corkman revealed: "Last night John (Hayes) got a viral infection and high temperature because of the demands and exertion of the game.
"He went to hospital for observation and his condition has stabilised this morning (Monday). We expect him to be released in the next 24 hours.
"He will return home for the rest of the week and we expect him to report to the camp on Sunday. There is no risk to his participation against Scotland." A further update on the prop's condition is due shortly.
Hayes' Munster team mate Marcus Horan, who shipped a neck injury in the defeat of Wales, is expected to be back in full training next week. O'Sullivan said that Horan was "quite stiff after the knock he took but overall, he's fine."
Munster and Lions lock Paul O'Connell, who sat out the Welsh Test owing to an A/C joint strain in the left shoulder, is also well on the mend. O'Sullivan added: "Paul is coming on all the time. He was close to being able to play against Wales but the risk was that if he sustained a knock on it, the rest of his tournament would be jeopardy.
"On balance it was sensible to rest him and we have every confidence he will be good to go for Scotland."