https://github.com/ianm1647/apothic-compats/blob/master/src/generated/resources/data/apothic_compats/affixes/ranged/mob_effect/virulence.json

Should be "apotheosis:bow", probably

Edit:
Looking at some of the other affixes in this same directory, they have nonsensical effect trigger/category pairings. ARROW_HIT doesn't work with tridents (you want PROJECTILE_HIT for that), and at least one affix assigned to bow/trident lootcategories has a trigger of ATTACK_SELF.

Taking another pass over all of these would probably be a good idea.