▁ser r ata ▁can ▁be ▁found ▁world wide ▁but ▁especially ▁in ▁warm ▁subt rop ical ▁and ▁temper ate ▁regions . ▁▁ ▁Life ▁cycle ▁ ▁Ad ult ▁L . ▁ser r ata ▁embed ▁their ▁for eb ody ▁into ▁the ▁nas oph ary n ge al ▁m uc osa , ▁feed ing ▁on ▁blood ▁and ▁flu ids . ▁Fem ales ▁live ▁at ▁least ▁two ▁years ▁and ▁produce ▁millions ▁of ▁eggs . ▁E gg s ▁exit ▁the ▁host ▁in ▁nas al ▁secret ion ▁or , ▁if ▁sw allowed , ▁with ▁f ec es . ▁When ▁sw allowed ▁by ▁an ▁intermediate ▁host , ▁the ▁four - leg ged ▁lar va e ▁( res emb ling ▁a ▁m ite ) ▁h atch ▁in ▁the ▁small ▁int est ine , ▁pen et rate ▁the ▁int est inal ▁wall , ▁and ▁l odge ▁in ▁t issues , ▁particularly ▁in ▁l ungs , ▁li ver , ▁and ▁l ym ph ▁nodes . ▁The ▁n ym phal ▁stage ▁develop s . ▁When ▁e aten ▁by ▁a ▁definit ive ▁host , ▁inf ect ive ▁n ym ph s ▁either ▁attach ▁in ▁the ▁upper ▁dig est ive ▁tract ▁or ▁quickly ▁travel ▁there ▁from ▁the ▁st om ach , ▁reaching ▁the ▁nas oph ary nx . ▁Fem ales ▁begin ▁egg ▁production ▁in ▁about ▁six ▁months . ▁▁ ▁D ise ase ▁▁ ▁L ingu at ul osis ▁is ▁a ▁condition ▁associated ▁with ▁the ▁organ ism ▁L ingu at ula ▁ser r ata ' '. ▁More ▁generally , ▁lingu at ul osis ▁can ▁be ▁considered ▁a ▁form