Tatjana Flade @Tatjana21
Only my speculation:
The explanation of illness strikes me as a possible bit of a silver lining.
What I mean is that if the illness is debilitating but not serious, perhaps the recovery time will be shorter than for an injury. (I'm wondering about something like a lingering case of the flu, for example.)
In any case, best to Ten.
, the ISU's official Skate America preview also cites illness:
"2013 World silver medalist Denis Ten (KAZ) had to withdraw due to illness on October 16."