no patrick you don't get the zombie apocalypses every 3 rounds (#29458)

code/datums/diseases/_disease.dm

@@ -178,6 +178,7 @@ GLOBAL_LIST_INIT(diseases, subtypesof(/datum/disease))
 
 /datum/disease/proc/Copy()
 	var/datum/disease/D = new type()
+	D.spread_flags = spread_flags //In case an admin (or other factor) has made a virus non spreading, you should *not* get a new spreading virus from blood
 	D.strain_data = strain_data.Copy()
 	return D
 

code/modules/awaymissions/mob_spawn.dm

@@ -762,7 +762,10 @@
 
 /obj/effect/mob_spawn/human/alive/zombie/non_infectious/equip(mob/living/carbon/human/H)
 	ADD_TRAIT(H, TRAIT_NON_INFECTIOUS_ZOMBIE, ROUNDSTART_TRAIT)
-	return ..()
+	. = ..()
+	for(var/datum/disease/zombie/zomb in H.viruses)
+		zomb.spread_flags = SPECIAL
+
 
 /// these mob spawn subtypes trigger immediately (New or Initialize) and are not player controlled... since they're dead, you know?
 /obj/effect/mob_spawn/corpse