1 5 ▁days ▁are ▁needed ▁for ▁sympt oms ▁to ▁occur , ▁namely ▁for ▁eggs ▁to ▁be ▁detected ▁in ▁the ▁st ool ▁( inc ub ation ▁period ). ▁ ▁The ▁ac ute ▁phase ▁consists ▁of ▁upper ▁ab dom inal ▁pain ▁and ▁low - grade ▁fe ver . ▁High ▁concentr ations ▁of ▁e os in oph il ▁gran ul ocy tes ▁are ▁in ▁blood . ▁Also , ▁higher ▁concentr ations ▁of ▁li ver ▁en zym es ▁are ▁seen . ▁When ▁un tre ated , ▁sympt oms ▁may ▁last ▁from ▁ 3 ▁days ▁to ▁ 4 ▁weeks . ▁ ▁Sym pt oms ▁of ▁chron ic ▁in fection ▁were ▁not ▁reported . ▁ ▁Di agn osis ▁and ▁treatment ▁E gg s ▁of ▁M . ▁conj unct us ▁can ▁be ▁found ▁by ▁st ool ▁analysis . ▁Ser olog ic ▁analysis ▁can ▁be ▁also ▁used ▁- ▁EL IS A ▁test ▁for ▁Ig G ▁ant ib od ies ▁against ▁ant ig ens ▁of ▁M . ▁conj unct us . ▁ ▁Dru gs ▁used ▁to ▁treat ▁inf est ation ▁include ▁pra zi quant el : ▁ 7 5   m g / kg ▁in ▁three ▁dos es ▁per ▁day ▁( the ▁same ▁dos age ▁applies ▁for ▁adult s ▁and ▁for ▁children ). ▁ ▁Effect s ▁on ▁animal ▁health ▁Watson ▁and ▁C roll ▁( 1 9 8 1 ) ▁studied ▁sympt oms ▁of ▁c ats . ▁Pre vention ▁includes ▁feed ing ▁with ▁cook ed ▁fish ▁( not ▁raw ▁fish ). ▁ ▁M . ▁conj unct us ▁was ▁found ▁to ▁be ▁a ▁common