diff --git a/code/modules/virus2/effect.dm b/code/modules/virus2/effect.dm
index f4d517feeec..ab17cbc9a67 100644
--- a/code/modules/virus2/effect.dm
+++ b/code/modules/virus2/effect.dm
@@ -188,6 +188,17 @@
 			for(i=0,i<iter,i++)
 				step_towards(S,mob)
 
+/datum/disease2/effect/catbeast
+	name = "Kingston Syndrome"
+	stage = 4
+	badness = 2
+	activate(var/mob/living/carbon/mob,var/multiplier)
+		if(istype(mob,/mob/living/carbon/human))
+			var/mob/living/carbon/human/h = mob
+			if(h.species.name != "Tajaran")
+				if(h.set_species("Tajaran"))
+					h.regenerate_icons()
+
 ////////////////////////STAGE 3/////////////////////////////////
 
 /datum/disease2/effect/bones