They are in the compendium. There is 40 of them.
Edit: This is the list:
Name Level Source
Dire Rat Filth Fever 1 Multiple Sources
Skinrot 2 Open Grave: Secrets of the Undead
Wererat Filth Fever 3 Monster Vault
Rot Grub Infestation 4 Monster Manual 3
Filth Fever 5 Multiple Sources
Feral Wererat Filth Fever 5 Dungeon Magazine 185
Wereboar Moontusk Fever 6 Dungeon Magazine 185
Moontusk Fever 6 Multiple Sources
Werewolf Moon Frenzy 6 Multiple Sources
Slavering Canker 6 Open Grave: Secrets of the Undead
Wereserpent Blood Rot 7 Dungeon Magazine 185
Lesser Otyugh Filth Fever 7 Multiple Sources
Rusty Paralysis 8 Dragon Magazine 376
Moon Frenzy 8 Dungeon Magazine 156
Lockjaw 8 Dungeon Magazine 178
Blinding Sickness 9 Dungeon Master's Guide
Meenlock Corruption 9 Monster Manual 3
Echo Madness 9 Underdark
Festering Doom 10 Dungeon Magazine 161
Greater Werewolf Moon Frenzy 10 Dungeon Magazine 185
Mournland Affection 11 Eberron Campaign Setting
Worms of Kyuss 11 Exemplars of Evil
Soul Rot 11 Manual of the Planes
Moon Rage 11 Monster Manual 2
Greater Otyugh Filth Fever 11 Monster Vault
Cemetery Rot 11 Open Grave: Secrets of the Undead
Twisted Domination 12 Dungeon Magazine 157
Cackle Fever 12 Dungeon Master's Guide
Brain Fluke 12 Forgotten Realms Campaign Guide
Sewer Fever 13 Dungeon Master's Guide 2
Greater Moon Frenzy 13 Monster Manual 2
Shakes 14 Dungeon Master's Guide
Filth Plague 14 Multiple Sources
Mindfire 16 Dungeon Master's Guide
Touch of Kyuss 16 Monster Manual 3
Chaos Phage 16 Multiple Sources
Mummy Rot 21 Multiple Sources
Hellfever 21 Dungeon Master's Guide
Brood Fever 21 Elder Evils
Slimy Doom 23 Dungeon Master's Guide