Thus far, euthanized bats with and without white noses from affected
and unaffected sites have been examined, and laboratories are
standing by to receive additional specimens as mortalities occur. The
most noteworthy finding to date has been the poor body condition of
many of the bats examined — they had little or no subcutaneous white
fat stores.
Still sounds to me likeĀ a colder than expected hibernation period has given rise to an opportunistic infection.