Board Thread:Off-Topic/@comment-25481762-20150206213816/@comment-29461586-20150206221020

Here are 3 strains I found about vampirism:

Noxiphilic Sanguivoria (Lamae Beolfag's):

Noxiphilic Sanguivoria is a strain of vampirism that was common during the Second Era. Unlike other vampiric diseases such as Porphyric Hemophilia and Sanguinare Vampiris, vampires of the Noxiphilic Sanguivoria strain are not weakened by daylight, but are instead strengthened during the night. Vampires of this strain can undergo a complete blood transfusion ritual known as the Rite of the Scion to become Scions, a more powerful version of a vampire.

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Porphyric Hemophilia (Oblivion(?))

Known as the "vampire's disease", Porphyric Hemophilia will become vampirism after a three day incubation period. By itself, the disease affects the victim's stamina, but on the third night of infection the victim will die and become undead. The disease can easily be cured within the three-day period, but vampirism is notoriously hard to cure. The disease is similar to the less-common Sanguinare Vampiris and Noxiphilic Sanguivoria.

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Sanguinare Vampiris (Skyrim)

Similar in nature to Porphyric Hemophilia and Noxiphilic Sanguivoria, victims of the less-common Sanguinare Vampiris will become vampires after a three day incubation period. By itself, the disease negatively affects the victim's health, but on the third night of infection the victim will die and become undead. The disease can easily be cured within the three-day period, but vampirism is notoriously hard to cure. Sanguinare Vampiris is found in the province of Skyrim.

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Overall, Noxiphilic Sanguivoria is known to be the greatest strain of vampirism, as it has no weaknesses, only benefits. But this strain of vampirism is now incredibly rare in the Fourth Era.