Zombie bee parasite spreads across US

The video explains how parasites lay eggs on honey bees, leading to maggots hatching inside them. Infected bees exhibit unusual behavior by leaving their hives at night and gathering around lights. The maggots feed on the bees' internal organs, eventually causing the bees to die after erratic movements. Finally, the maggots emerge from the dead bees' bodies.

What are the symptoms exhibited by bees before they die?

What occurs after the maggots emerge from the bees' body?