carry, bring, foist, manifest, brunt, derived, taken, inflict, ascribe, accompanied, more...

unborne, unsupported, uncarried, unheld, unshouldered

flea, louse, tick, chigger, midge, mosquito, more...

tick, arthropod, ancient, louse, structure, vector, insect, blood, old, air, rodent

shouldered by,   carried; bore