Since the two entries differ i'll agree the secondary infections are only the Con damage. The original victim's very soul errodes under the curse's wrath. Those who contact the victim are
slightly better off.
Mind you... using the "primary sourse" argument one could argue either way, but this way splits the differences.
I love mummy rot. It is what leprosy was feared to be by the ignorant masses of history and so much more. Fun and Easy.
Slimey Doom makes a nice Ebola stand-in.
[Sblock=Advanced 16 HD Mummy] Advanced Mummy
Medium Undead
Hit Dice: 16d12+16+16* (144 hp) [16 from created in desecrated area, 16 from improved toughness]
Initiative: +0
Speed: 20 ft. (4 squares)
Armor Class: 23 (+13 natural), touch 10, flat-footed 20
Base Attack/Grapple: +8/+16
Attack: Slam +17 melee (1d6+12 plus mummy rot DC20)
Full Attack: Slam +17 melee (1d6+12 plus mummy rot DC20)
Space/Reach: 5 ft./5 ft.
Special Attacks: Despair DC20, mummy rot DC20
Special Qualities: Damage reduction 5/–, darkvision 60 ft., undead traits, vulnerability to fire
Saves: Fort +4, Ref +2, Will +8
Abilities: Str 26**, Dex 10, Con —, Int 6, Wis 14, Cha 15
Skills: Hide +7, Listen +14, Move Silently +7, Spot +14
Feats: improved natural Armor x 3, weapon Focus slam, Great Fortitude, Improved Toughness.
Environment: Any
Organization: Solitary, warden squad (2–4), or guardian detail (6–10)
Challenge Rating: 7
Treasure: Standard
Alignment: Usually lawful evil
Advancement: 17–24 HD (Large) [/Sblock]