I didn't realize they had been nerfed. I started a fresh save after the patch and had all mods/cc pulled. I had a Vlad call the first night. He did actually come in, but he didn't bite. I thought it was because my sim's cat was awake and woke his owner up (which he had). Vlad did come back the next day and I'm fairly certain he bit her that time. She had an uncomfortable moodlet and got woken up. If they were removed with a patch, I kind of feel like I'm losing my mind because I'm 99.9% sure she got bit but I wasn't paying attention. Maybe the moodlet was over a cheap bed. I don't know now because I wasn't aware there was a change with vampire invasions.
Vlad definitely entered the house both those times, but he never returned after that. It was just after the patch but before JA came out. I usually play with mods and CC but I wasn't at that time because I play with all mods and CC out until they are updated or confirmed to be working.