It depends…
If your initial trip reservations were made, or if your trip cancellation-interruption insurance was purchased, while an advisory pertaining to the pandemic was in place, it will not be possible to make a cancellation claim later for the same reason, given that it was a known risk at the time of purchase.
If there was no advisory pertaining to the pandemic in place at the time of booking or when you purchased your insurance, and an advisory is issued after your trip cancellation-interruption policy’s effective date, it will be a covered risk. (Subject to the other terms, conditions and limitations of the policy.)