So Astarion here is a vampire spawn, so he's not quite as fully powered as one but still has the side effects of needing to be invited in a private space, running water burns him like acid, and sunlight can kill him.

However, he has a parasite in his brain that "turns off" those downsides.

I assume the parasite itself won't work on arrival (but can be regained?), but would the vampire attributes be the same? If he still has the negative attributes, would he have positives like better bodily durability and drinking a person's blood can make him stronger. (He won't actually be drinking people's blood, though, unless he comes to trust someone and they offer.)

Thank you!