diff --git a/code/datums/diseases/_MobProcs.dm b/code/datums/diseases/_MobProcs.dm
index 49991b32bea..48abda03c83 100644
--- a/code/datums/diseases/_MobProcs.dm
+++ b/code/datums/diseases/_MobProcs.dm
@@ -38,6 +38,7 @@
 	DD.holder = src
 	if(DD.disease_flags & CAN_CARRY && prob(5))
 		DD.carrier = 1
+	DD.strain_data = D.strain_data.Copy()
 	DD.affected_mob.med_hud_set_status()
 
 
diff --git a/code/datums/diseases/_disease.dm b/code/datums/diseases/_disease.dm
index f7772c5ac2b..05ea21602c3 100644
--- a/code/datums/diseases/_disease.dm
+++ b/code/datums/diseases/_disease.dm
@@ -179,7 +179,9 @@ var/list/diseases = typesof(/datum/disease) - /datum/disease
 
 
 /datum/disease/proc/Copy()
-	return new type()
+	var/datum/disease/D = new type()
+	D.strain_data = strain_data.Copy()
+	return D
 
 
 /datum/disease/proc/GetDiseaseID()
diff --git a/code/datums/diseases/dna_spread.dm b/code/datums/diseases/dna_spread.dm
index c24e13668e0..eb38e8689af 100644
--- a/code/datums/diseases/dna_spread.dm
+++ b/code/datums/diseases/dna_spread.dm
@@ -8,7 +8,7 @@
 	disease_flags = CAN_CARRY|CAN_RESIST
 	agent = "S4E1 retrovirus"
 	viable_mobtypes = list(/mob/living/carbon/human)
-	var/list/original_dna = list()
+	var/datum/dna/original_dna = null
 	var/transformed = 0
 	desc = "This disease transplants the genetic code of the intial vector into new hosts."
 	severity = MEDIUM
@@ -16,6 +16,17 @@
 
 /datum/disease/dnaspread/stage_act()
 	..()
+	if(!affected_mob.dna)
+		cure()
+
+	if(!strain_data["dna"])
+		//Absorbs the target DNA.
+		strain_data["dna"] = new affected_mob.dna.type
+		affected_mob.dna.copy_dna(strain_data["dna"])
+		src.carrier = 1
+		src.stage = 4
+		return
+
 	switch(stage)
 		if(2 || 3) //Pretend to be a cold and give time to spread.
 			if(prob(8))
@@ -32,21 +43,18 @@
 					affected_mob.adjustToxLoss(2)
 					affected_mob.updatehealth()
 		if(4)
-			if(!src.transformed)
-				if ((!strain_data["name"]) || (!strain_data["UI"]) || (!strain_data["SE"]))
-					del(affected_mob.virus)
-					return
-
+			if(!src.transformed && !src.carrier)
 				//Save original dna for when the disease is cured.
-				src.original_dna["name"] = affected_mob.real_name
-				src.original_dna["UI"] = affected_mob.dna.uni_identity
-				src.original_dna["SE"] = affected_mob.dna.struc_enzymes
+				original_dna = new affected_mob.dna.type
+				affected_mob.dna.copy_dna(original_dna)
 
 				affected_mob << "<span class='danger'>You don't feel like yourself..</span>"
-				affected_mob.dna.uni_identity = strain_data["UI"]
+				var/datum/dna/transform_dna = strain_data["dna"]
+
+				transform_dna.transfer_identity(affected_mob)
+				affected_mob.real_name = affected_mob.dna.real_name
+
 				updateappearance(affected_mob)
-				affected_mob.dna.struc_enzymes = strain_data["SE"]
-				affected_mob.real_name = strain_data["name"]
 				domutcheck(affected_mob)
 
 				src.transformed = 1
@@ -55,12 +63,12 @@
 	return
 
 /datum/disease/dnaspread/Del()
-	if ((original_dna["name"]) && (original_dna["UI"]) && (original_dna["SE"]))
-		if(affected_mob)
-			affected_mob.dna.uni_identity = original_dna["UI"]
-			updateappearance(affected_mob)
-			affected_mob.dna.struc_enzymes = original_dna["SE"]
-			affected_mob.real_name = original_dna["name"]
+	if (original_dna && transformed && affected_mob)
+		original_dna.transfer_identity(affected_mob)
+		affected_mob.real_name = affected_mob.dna.real_name
 
-			affected_mob << "<span class='notice'>You feel more like yourself.</span>"
+		updateappearance(affected_mob)
+		domutcheck(affected_mob)
+
+		affected_mob << "<span class='notice'>You feel more like yourself.</span>"
 	..()
\ No newline at end of file
diff --git a/code/datums/diseases/transformation.dm b/code/datums/diseases/transformation.dm
index de27718296c..4eac92f16b9 100644
--- a/code/datums/diseases/transformation.dm
+++ b/code/datums/diseases/transformation.dm
@@ -9,6 +9,7 @@
 	severity = HARMFUL
 	stage_prob = 10
 	visibility_flags = HIDDEN_SCANNER|HIDDEN_PANDEMIC
+	disease_flags = CURABLE
 	var/list/stage1 = list("You feel unremarkable.")
 	var/list/stage2 = list("You feel boring.")
 	var/list/stage3 = list("You feel utterly plain.")
@@ -202,7 +203,7 @@
 				var/mob/living/carbon/human/human = affected_mob
 				if(human.dna && human.dna.species.id != "slime")
 					human.dna.species = new /datum/species/slime()
-					human.update_icons()
+					human.regenerate_icons()
 
 /datum/disease/transformation/corgi
 	name = "The Barkening"
diff --git a/code/game/dna.dm b/code/game/dna.dm
index 21f94b0ce29..43f11afb6e7 100644
--- a/code/game/dna.dm
+++ b/code/game/dna.dm
@@ -36,9 +36,20 @@
 		destination.dna.uni_identity = uni_identity
 		destination.dna.blood_type = blood_type
 		destination.dna.species = species
+		destination.dna.mutant_color = mutant_color
 		destination.dna.real_name = real_name
 		destination.dna.mutations = mutations
 
+/datum/dna/proc/copy_dna(var/datum/dna/new_dna)
+	new_dna.unique_enzymes = unique_enzymes
+	new_dna.struc_enzymes = struc_enzymes
+	new_dna.uni_identity = uni_identity
+	new_dna.blood_type = blood_type
+	new_dna.species = new species.type
+	new_dna.mutant_color = mutant_color
+	new_dna.real_name = real_name
+	new_dna.mutations = mutations
+
 /datum/dna/proc/add_mutation(mutation_name)
 	var/datum/mutation/human/HM = mutations_list[mutation_name]
 	HM.on_acquiring(holder)
diff --git a/code/modules/mob/living/carbon/human/blood.dm b/code/modules/mob/living/carbon/human/blood.dm
index 48da639f97e..ac4e518258b 100644
--- a/code/modules/mob/living/carbon/human/blood.dm
+++ b/code/modules/mob/living/carbon/human/blood.dm
@@ -153,7 +153,7 @@ var/const/BLOOD_VOLUME_SURVIVE = 122
 	*/
 
 	for(var/datum/disease/D in src.viruses)
-		B.data["viruses"] += new D.type(0, D, 1)
+		B.data["viruses"] += D.Copy()
 
 	B.data["blood_DNA"] = copytext(src.dna.unique_enzymes,1,0)
 	if(src.resistances&&src.resistances.len)