Since Aticston brought it up, and thus it actually ended up in the script for about fourteen updates from now, I thought I should go down the list of ways lycanthropy can be transmitted.
BITE OR CLAW (from werewolf): Yes, proven. Apparently swift amputation of a wounded limb can prevent infection if done immediately.
BITING / CLAWING A WEREWOLF: "Man bites werewolf" is a joke, not a story. It doesn't do anything.
SPRAYING WEREWOLF BLOOD ON HUMAN: Yes, but requires extreme circumstances; the blood must get into an open wound on the victim AT ONCE. Apparently after a few seconds in open air the blood becomes non-viable for transmission. It -has- happened, but only a couple of times that anybody anywhere knows of. The Colorado Experiments showed that a direct injection of blood taken from a were into a human would transmit lycanthropy, but this is different from, say, wiping up a nosebleed.
WEREWOLF FUR: No. Swallowing werewolf fur, licking a werewolf, even rubbing an open wound against werewolf fur does not transmit. Fur is dead.
ORAL SEX (GIVING): Unknown, but probably not. No systematic experiments have been attempted.
ORAL SEX (RECEIVING): Unknown, but probably yes.
COUGHS, SNEEZES, OR OTHER AERIAL VECTORS: Definitely not, otherwise any werewolf with the Martian Flu would be Patient Zero of a furry pandemic.
BREAST MILK: Oh, so VERY unknown. We'd find out if this was the Milkmaid-verse, but PitW is slightly more serious than that.