One could speculate there was a mild explosion of Suthays born, but I don't think this would fall in quite right with the Lunar Lattice lore, since they are born under "New Moons", and the Void Nights were moonless (not simply 'new'). To those that were born in this time period, are they treated differently in Eleswyr? Are they associated with something superstitiously bad? I would only hope so, given that the lore if rife with high-magic hardships and none of the races are really what I'd call 'advanced.' Even the Altmer would have to fall prey to this.
For such a major and terrifying event, there seems to be absolutely no information about it.