KwakungoSepthemba 2018, kanti uVandenberg, owayeneminyaka engu-67 ngaleso sikhathi, wayezizwa “engaphansi kwesimo sezulu” izinsuku ezimbalwa, sengathi wayenomkhuhlane, kusho yena.
Waqala ukuvuvukala kobuchopho. Walahlekelwa ikhono lokufunda nokubhala. Izingalo nemilenze yakhe kwakungasasebenzi kahle ngenxa yokukhubazeka.
Nakuba kuleli hlobo kube nokutheleleka kokuqala kwendawo eminyakeni engamashumi amabili yesifo esihlobene nomiyane, umalaleveva, yigciwane laseWest Nile kanye nomiyane abalisakazayo okukhathaza kakhulu izikhulu zezempilo zikahulumeni.
URoxanne Connelly, isazi sezinambuzane zezokwelapha eCenters for Disease Control and Prevention (CDC), uthe lezi zinambuzane, uhlobo lomiyane olubizwa ngokuthi iCulex, ziyingxenye yeCenters for Disease Control and Prevention (CDC) “eyinkinga ekhathaza kakhulu e-United States njengamanje”
Isizini yemvula engavamile yalo nyaka ngenxa yemvula kanye neqhwa elincibilikayo, kuhlangene nokushisa okukhulu, kubonakala sengathi kuholele ekwandeni kwenani lomiyane.
Futhi ngokusho kososayensi be-CDC, lawa ma-mouse aya ngokuya emelana nezibulala-zinambuzane ezitholakala ezifuthweni eziningi ezisetshenziswa umphakathi ukubulala omiyane namaqanda abo.
“Lokho akulona uphawu oluhle,” kusho uConnelly. “Silahlekelwa amanye amathuluzi esivame ukuwasebenzisa ukulawula omiyane abangenwe yilesi sifo.”
E-Centers for Disease Control and Prevention's Insect Laboratory eFort Collins, eColorado, okuyikhaya lamashumi ezinkulungwane zomiyane, ithimba likaConnelly lithole ukuthi omiyane baseCulex baphila isikhathi eside ngemva kokuchayeka ku-izibulala-zinambuzane.
“Ufuna umkhiqizo ozobadida, hhayi obenza badideke,” kusho uConnelly, ekhomba ibhodlela lomiyane abavezwe kumakhemikhali. Abantu abaningi basandiza.
Ukuhlolwa kwelebhu akutholanga ukumelana nemithi yokubulala izinambuzane evame ukusetshenziswa abantu ukuxosha omiyane lapho behamba ngezinyawo kanye neminye imisebenzi yangaphandle. UConnelly uthe iyaqhubeka nokwenza kahle.
Kodwa njengoba izinambuzane ziba namandla kakhulu kunezibulala-zinambuzane, inani lazo liyakhula kwezinye izingxenye zezwe.
Kusukela ngo-2023, kube nezigameko zabantu ezingu-69 zokutheleleka ngegciwane laseWest Nile ezibikiwe e-United States, ngokusho kwe-Centers for Disease Control and Prevention. Lokhu akulona irekhodi: ngo-2003, kwaqoshwa amacala angu-9,862.
Kodwa ngemva kweminyaka engamashumi amabili, omiyane abaningi basho amathuba amakhulu okuthi abantu bazolunywa futhi bagule. Amacala eWest Nile avame ukwenzeka ngo-Agasti nangoSepthemba.
“Lokhu kumane kuyisiqalo sendlela esizobona ngayo iWest Nile iqala ukuthuthuka e-United States,” kusho uDkt. Erin Staples, isazi sezifo zezokwelapha elabhorethri yeCenters for Disease Control and Prevention eFort Collins. “Silindele ukuthi amacala akhule kancane kancane emasontweni ambalwa ezayo.
Isibonelo, izithiyo zomiyane ezingu-149 eMaricopa County, e-Arizona, zihlolwe zatholakala zinegciwane laseWest Nile kulo nyaka, uma kuqhathaniswa neziyisishiyagalombili ngo-2022.
UJohn Townsend, umphathi wokulawula ama-vector weMaricopa County Environmental Services, uthe amanzi amile avela emvuleni enamandla ehlangene nokushisa okukhulu kubonakala sengathi kwenza isimo sibe sibi kakhulu.
“Amanzi alapho asevuthiwe ukuze omiyane babeke amaqanda kuwo,” kusho uTownsend. “Omiyane bachanyuselwa ngokushesha emanzini afudumele – zingakapheli izinsuku ezintathu kuya kwezine, uma kuqhathaniswa namasonto amabili emanzini apholile,” kusho yena.
UJuni onemvula engavamile eLarimer County, eColorado, lapho kukhona khona ilebhu yaseFort Collins, nakho kuholele “ebuningini obungakaze bubonwe” bomiyane abangadlulisela igciwane laseWest Nile, kusho uTom Gonzalez, umqondisi wezempilo yomphakathi wesifunda.
Idatha yesifunda ikhombisa ukuthi kunomiyane abaningi ngokuphindwe kahlanu eNtshonalanga Nile kulo nyaka kunangonyaka odlule.
UConnelly uthe ukukhula komnotho kwezinye izingxenye zezwe “kuyakhathaza kakhulu.” “Kuhlukile kulokho esikubonile eminyakeni embalwa edlule.”
Selokhu kwatholakala igciwane laseWest Nile okokuqala e-United States ngo-1999, seliye laba yisifo esivame kakhulu esithwalwa omiyane ezweni. UStaples uthe izinkulungwane zabantu ziyatheleleka minyaka yonke.
I-West Nile ayisabalali kusuka komunye umuntu kuya komunye ngokuxhumana okungahleliwe. Leli gciwane lidluliselwa kuphela omiyane baseCulex. Lezi zinambuzane zitheleleka uma ziluma izinyoni ezigulayo bese zidlulisela igciwane kubantu ngokuluma okunye.
Iningi labantu alikaze lizizwe lutho. Ngokusho kwe-CDC, umuntu oyedwa kwabahlanu uba nomkhuhlane, ikhanda elibuhlungu, izinhlungu zomzimba, ukuhlanza kanye nesifo sohudo. Izimpawu zivame ukuvela ezinsukwini ezi-3-14 ngemva kokulunywa.
Umuntu oyedwa kwabangu-150 abangenwe yigciwane laseWest Nile uba nezinkinga ezinkulu, okuhlanganisa nokufa. Noma ubani angagula kakhulu, kodwa uStaples uthe abantu abangaphezu kweminyaka engu-60 kanye nabantu abanezimo zempilo ezingavamile basengozini enkulu.
Ngemva kweminyaka emihlanu etholakale ene-West Nile, uVandenberg usephinde wakwazi ukuthola amakhono amaningi ngokwelashwa okunamandla ngokomzimba. Kodwa-ke, imilenze yakhe yaqhubeka nokuba ndikindiki, okwamphoqa ukuthi athembele ezinduku zokusibekela.
Ngesikhathi uVandenberg ewa ngalolo suku ekuseni ngoSepthemba 2018, wayesendleleni eya emngcwabeni womngane wakhe owayeshone ngenxa yezinkinga zegciwane laseWest Nile.
Lesi sifo “singaba sibi kakhulu futhi abantu badinga ukwazi lokho. Singashintsha impilo yakho,” kusho yena.
Nakuba ukumelana nezibulala-zinambuzane kungase kukhule, ithimba likaConnolly lithole ukuthi izibulala-zinambuzane ezivamile abantu abazisebenzisa ngaphandle zisasebenza. Ngokusho kwe-Centers for Disease Control and Prevention (CDC), kungcono ukusebenzisa izibulala-zinambuzane eziqukethe izithako ezifana ne-DEET ne-picaridin.
Isikhathi sokuthunyelwe: Mashi-27-2024