Ngemuva kokugqashuka kuka-2006 kwe-E. coli esipinashi esifakwe esikhwameni, abacubungula bafuna imishini yokuhlola esheshayo, enembe kakhudlwana ukuze babambe ukungcola ngaphambi kokuba imikhiqizo esanda kusikwa iphume ezinsizeni.
Kodwa ngaphambi kokuthi ingxenye entsha yobuchwepheshe ithengiswe futhi ithengiswe embonini, kufanele ihlolwe ngaphandle kwelebhu elingisiwe, ngakho izinkampani zobuchwepheshe zakha ubudlelwano nabaphrosesa ukuze bakhe izixazululo ezintsha zemboni. I-Verdelli Farms, iphrosesa yase-Harrisburg, e-Pa.-based egxile ngesipinashi esifakwe esikhwameni, yaqala ukuhlola umkhiqizo omusha ovela kwa-Hanson Technologies, Carlisle, Pa., ngoMeyi.
"Kunengqondo ukuba nekhasimende - abaprosesa - ababambe iqhaza ekwakhiweni kusukela ekuqaleni," kusho uKyle Olds, umqondisi wokuqinisekisa ikhwalithi yeVerdelli Farms.
I-Hanson Technologies ixhumane ne-Verdelli Farms ukuze iqhube uhlelo lokuhlola ucezu lwesisetshenziswa esihlanganisa izinhlelo zokusebenza ezimbili - esisodwa esakhiwa ngaphambi kokukhumbula isipinashi kanye nesinye esavela ngenxa yokuqubuka kwe-E. coli.
"Babedinga umuntu ozoyizama ezimweni zangempela," kusho u-Olds.
Siyahlolwa kulayini wesipinashi esinamaqabunga esiluhlaza we-Verdelli, kodwa singasetshenziswa nanoma yimuphi umkhiqizo. Kunezingqinamba eziqondene nempahla okuzomele zixazululwe, ngakho-ke uhlelo luzohlelwa ngendlela ehlukile esipinashi njengoba luzokwenziwa kumatamatisi.
Uhlelo olusha - isixazululo sokuhlola ukuphepha kokudla okushesha kakhulu - yisiqeshana esisemgqeni esihlola amanzi okugeza ukuthi angcolile yini - ukuthola kokubili izinto eziphilayo nezifile. Amanzi okugeza adala isampula enkulu enikeza ukuzethemba okungcono kwezibalo.
"Uyakwazi ukusampula ngempumelelo amaphesenti ayi-100 omkhiqizo owufaka ethangini lokuwasha," kusho uBill Hanson, umongameli weHanson Technologies.
Ama-Immunoassay asetshenziselwa ukuhlola ukungcola okufika kwe-15 okuhlukene futhi angaqedwa ngaphansi kwamahora amabili. Ama-Immunoassays athambekele ekubeni nemiphumela engamanga, kodwa njengoba amanzi okugeza elondoloziwe, kunesampula engabuye ihlolwe kusetshenziswa ezinye izindlela. Amapharamitha wokuhlola ohlelweni lokuhlola avivinya izikhathi eziyisithupha ku-E. coli O157:H7, okungenzeka “ibiqile,” kusho u-Hanson, kodwa izonikeza isithombe esingcono sokunemba kwesistimu.
“Okusihehe kakhulu wukuzethemba ngemiphumela,” kusho u-Olds.
Ngoba wonke noma cishe wonke amanzi okugeza ayathathwa, kunethuba elingcono lokuthi ukungcola kungabonwa. Futhi ukuhlola akulona isampula ngakho-ke ingakhuliswa kusetshenziswa ezinye izindlela.
“Uma sesiqedile, sigcine isampula ongenza ngalo izivivinyo ezijwayelekile,” kusho uHanson.
Ijubane ebuya ngalo imiphumela linikeze ama-Verdelli Farms isithombe esicishe sibe sangempela sokuphepha komkhiqizo wawo. Imishini yokuhlola eseqophelweni eliphezulu nayo iyabiza kancane, ngaphezu kokonga kwezindleko zokungakhumbuli amaloli agcwele umkhiqizo uma kukhona okutholakele.
"Siyayazi impendulo ngaphambi kokuthi silayishe umkhiqizo emalolini," kusho u-Olds.
Kubalulekile ukuthi izinkampani zisebenzisane ukuze zithuthukise izindlela zokuhlola umkhiqizo omusha, ukuthuthukisa okokusebenza okufanele izitshalo ezisikiwe kabusha. Ukuhlola okungcono futhi kuzonikeza ukuvikelwa komkhiqizo ngoba amazinga aphezulu amasampula azothola amazinga aphansi e-pathogen futhi avimbele ukungcola ekufinyeleleni kumsebenzisi wokugcina, kusho uHanson.