Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Passage: The 1971 Iraq chepfu zviyo njodzi yaiva vakawanda methylmercury chepfu chiitiko kuti yakatanga mukupera 1971. Zviyo zvakarapwa nemushonga unoparadza fungicides unonzi methylmercury uye zvisina kumbogadzirirwa kudyiwa nevanhu zvakapinzwa muIraq sezviyo zvembeu kubva kuMexico neUnited States. Nemhaka yezvinhu zvinoverengeka, kusanganisira kunyorwa kwemutauro wokune dzimwe nyika uye kuparadzirwa kunonoka mukati mekukura, zviyo izvi zvine chepfu zvakadyiwa sezvokudya nevagari veIraq vari kumaruwa. Vanhu vakatambura neparesthesia (kupera simba kweganda), ataxia (kushayikwa kwekuronga kwokufamba kwetsandanyama) uye kurasikirwa nokuona, zviratidzo zvakafanana nezvakaonekwa apo hosha yeMinamata yakabata Japan. Nhamba yakanyorwa yavanhu vakafa yakanga iri vanhu 459, asi nhamba dzinodokuva kakapetwa kagumi dzakarumbidzwa. Kutapwa kwa 1971 kwakanga kuri ngwavaira huru zvikurusa yokutapwa nemekiyuri apo kwakaitika, nenhambo dzakakwira muna January naFebruary 1972 uye dzichimira panopera March.  Mubvunzo: Mwedzii iyo chinoitika chepfuva chakasvika pakakwirira zvikurusa?
Ndira naFebruary