Ngaba umkhuhlane intaka lokuziguqula zibangele lombulalazwe phakathi kwabantu?

Izazinzulu ziye kuqhutywa kwilebhu experiments apho wabonisa ukuba phantsi kweempembelelo yemfuza ezintathu ezilula komkhuhlane weentaka ukuze ufumane ithuba isasazeka ukusuka komnye umntu ukuya komnye.

Kodwa ukoyika ukukhangela isuti nokhuseleko bemvelo musa: abaphandi ayizange iguquke intsholongwane ngokwalo (senze zonke ukubona imifanekiso eshukumayo ngokwaneleyo iintlekele ukuthintela le mpazamo). Ngokwahlukileyo koko, ezi uphando emangalisayo kuya kunceda izazinzulu ukuba bahlale phambi intsholongwane ukuthintela amandla ukusasazeka kwayo.

Njani yingozi umkhuhlane intaka

Abaphandi uhlobo abanomdla ebizwa Avian Influenza A (H7N9). Ngokutsho WHO, ngo-2013, le ntsholongwane abachaphazelekayo abantu abangaphezu kwama-900. Noko ke, uninzi amatyala anxulumene kubantu abasebenza iinkukhu ukususela intsholongwane ngokwayo nako ezinzileyo phakathi kwabantu.

Kwimeko okubi, intsholongwane ukuze iziguqule ibe luhlobo owawuza ingahlakazeki phakathi kwabantu, kwaye uqale ukusasaza okomlilo wedobo. Ngenxa yoko, izazinzulu eCalifornia wasebenza ezahlukeneyo izakhi kwigenome ka-H7N9, ukuze sibone ukuba yintoni enokusinceda intsholongwane ukuba isasazeke phakathi kwabantu.

ukuguquka elula

Izazinzulu ukusebenza nge iproteni phezu komhlaba intsholongwane ebizwa ngokuba hemagglutinin H7. It ivumela intsholongwane ukubophelela nokuthwala iiseli nesifo kubo.

Bafumanisa ukuba le iproteni unako ukuguquka ezincinane asidi ezintathu acid safumaneka kumphezulu kwentsholongwane evumela ukuba babophe ngcono receptors iseli zifumaneka iiseli babantu, njengoko kuthelekiswa iiseli avian.

Elabhoratri, izazinzulu ziye wavelisa H7 triple njengesi haemagglutinin waza wafumanisa ukuba bakwazi ukuzuza ngempumelelo zintshula phezu iiseli zeesampulu uqhoqhoqho inyama yabantu.

Ngaba kukho kube bhubhane?

imimiselo zokhuseleko ukuthintela ukungena ezi ukuziguqula kwezi iintsholongwane H7N9, ngoko ke ababhali zophononongo zibonisa ukuba ndadala ntsholongwane, yaye isetyenziswe kuphela isiqwenga ukuba ingozi yalo. Kwezakhi ne H7N9 wokwenene zimele eksperimenti nokonyuka imisebenzi wentsholongwane egazini engavunyelwayo njengangoku (ngenxa yezizathu ezicacileyo).

Ukanti, ukuba woyike ezi ziphumo? Kubonakala ngathi, hayi noko. Fiona Kalli, oyingcali Zizifo yokuphefumla Imperial College London, uthi amathuba ekubonakalisweni ngaxeshanye zonke zontathu ukuziguqula "eziphantsi kakhulu."

"Eli nqaku liza kusinceda sikwazi ukulawula ngenyameko ngakumbi iingozi ezinxulumene ne umkhuhlane weentaka, nokuba sithi gqolo sandise ulwazi lwethu oko utshintsho intsholongwane umkhuhlane weentaka kunokuba yingozi," - utshilo.