The Hail Mary and the Black Death

There is reason to believe that the second part of the Hail Mary prayer emerged during the Black Death:

" 'The Black Death, which ravaged all Europe and wiped out one-third of its population, prompted the faithful to cry out to the Mother of Our Lord to protect them at a time when the present moment and death were almost one.' "   (Venerable Fulton Sheen)  From Aleteia via Tea at Trianon