Code Vs do not show in mirrors, photographs or videos. Their voices cannot be recorded or transmitted by phone. Image and sound can only be detected face to face.
	They are immortal. They cannot be killed, only reduced to ashes (neutralized).
	They can be neutralized by exposure to sunlight or by introducing carbon into the chest cavity (projectile, probe or explosive). Resulting immolation releases enough energy to start fires.
	Code V ashes can be regenerated and must be kept secure.
	They can be repelled by ultraviolet light (the radiation in sunlight) or by allicin (the chemical in garlic).
	They can shield themselves from ultraviolet light with tinted glass.
	They can be affected by polluted blood.
	When they feed, the host wound heals over in minutes and can only be detected in ultraviolet light. The bite can be treated with lasers. The skin around the wound is burnt away leaving a small scar.
	If untreated, a human becomes suggestible and develops aversion to sunlight.
	There may also be an aversion to religious symbols. This may be psychological. The effect of religious symbols on Code Vs is unproven.
	When drained to death, a human becomes a Code V.
	No-one is forcibly recruited. They only take those who want to go.
	Code Vs claim to have human-type emotions. This is unproven.

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