Raccoon City's Wasps grew to a huge size thanks to the viral outbreak. Their mutation was mostly limited to an increase in size and general aggression, common with the simpler T-Viral infected animals.
They infested a large hive in the residence where they would attack en masse if they feel threatened. Their stings are strong enough to penetrate bone, and the venom could kill in minutes if not treated.
It is not possible to be infected by a Wasps sting. However, their poison has been enhanced by the T-virus in order to paralyse prey.