"I will be taking the rest of the season day by day after having my appendix removed last night ... it's not ideal but I'll be alright," the 28-year-old, formerly Lizzie Armitstead, said on her Twitter page.
Deignan won the 2015 title in Virginia and was among the favourites to win it a second time in September.
The championships take place Sept. 17-24 in Bergen with the women's road race on Sept. 23.
(Reporting by Martyn Herman; Editing by Susan Fenton)
Share
