There have been quite a few withdrawals from the 2025 International Championship, as reported by WST:

Withdrawals From International Championship

Mark Williams, Ali Carter, Sam Craigie, Ken Doherty and David Gilbert have pulled out of next week’s International Championship in China.

Williams has withdrawn due to illness and his opponent Anthony McGill receives a bye to the last 32. 

Doherty has withdrawn due to illness and his opponent Neil Robertson receives a bye to the last 32.

Craigie has withdrawn for medical reasons and his opponent Jimmy Robertson receives a bye to the last 32.

Carter has withdrawn for personal reasons and his opponent Aaron Hill receives a bye to the last 32.

Gilbert has withdrawn for personal reasons and his opponent, either Thepchaiya Un-Nooh or Xu Jiarui, will receive a bye to the last 32.

That’s a lot of withdrawals… but of course, this time of the year, colds and flu are not uncommon and traveling when already unwell usually only makes it worse.