According to Sporza, Astana team boss Johan Bruyneel has been admitted to a hospital in Marbella, Spain because of an acute fever.
The Belgian, who celebrated his 45th birthday on Monday, will have to remain in the hospital for four days.
This means that he will miss the start of the Vuelta, which will begin this weekend. There is no news yet on whether Bruyneel plans to rest before he returns to his duties on the road.