No, They haven't. The church moves at a snails pace when it comes to approving apparitions and miracles. That doesn't mean that Archbishop Giordano isn't sincere in his beliefs of a miracle in the liquidation of the blood. Unless the church condemns it as false, it is acceptable to view it as a means to grace.
If the glory of God is as near as your next heart-beat, why this insane longing for symbolism in cheap parlor-tricks?
Snail's pace?
This event has been occurring yearly since 1389!
That's SIX HUNDRED YEARS!
Lourdes was approved as a place of miracles in less than twenty years.
I'll pray to St. Januarius and allow the Napalese to have their tradition.
I'm still suspicious.
What do you mean by "as a means to grace".