The American's spokesman Lewis Kay said in an email that Vonn was feeling much better and was resting comfortably at her home.
"Doctors are still working to determine what specifically was the cause of her illness but thankfully she has responded well to their treatment," Kay said.
"We do not know when she will be able to return to the mountain and will update as her health improves," he added.
The four-times overall World Cup winner's next scheduled race is at Aspen on November 24.
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