I bought Dawnguard before ending a questline from Skyrim. Because of that, I often visit main cities to do some quests. Every time I visit a city, I find dead bodies of NPCs that I talked to earlier. Yey, vampire attack AGAIN!
Maybe these NPCs aren't so important for the quest lines, but they're making my Skyrim experience better.
How do I make NPCs in cities not die from vampire attacks and stop this madness?