Hargabka shimbiraha ee karaa in ay isbaddali iyo sababi faafa a ka mid ah aadanuhu?

Seynisyahanno ku sameeyay tijaabooyin shaybaadh, taas oo muujisay in sarkhaansan yihiin saddex Isbedelo fudud ee hargabka avian u dhawdihiin inaad awood u leeyahay inuu ku faafay qof ilaa qof kale.

Laakiin ha ka baqin in la raadiyo joog ah iyo ilaalinta noolaha: baadhayaashu wax ka beddeli mayso virus laftiisa (waxaan oo dhan ma aragtay movies ku filan oo ku saabsan aafooyinka si looga fogaado in qalad this). On lid ku ah, kuwaas oo cilmi cajiib ah ka caawin doona in ay saynisyahano hor joogo of virus si looga hortago faafidda iman kara.

hargabka Sidee khatar shimbir

Cilmi cadaadis xiiso yeedhay hargabka avian A (H7N9). Sida laga soo xigtay WHO, ee 2013, virus this saameeyeen in ka badan 900 oo qof. Si kastaba ha ahaatee, tirada ugu badan ee kiisaska ayaa la xiriira dadka ka shaqeeya digaaga tan iyo virus laftiisa ma awoodo inuu joogto ka mid ah aadanaha.

In kiiska ugu xumaa, fayraska way isbaddali laga yaabaa in qaab in ka mid ah aadanaha oo kala fidin karin, oo laga yaabo inay bilaabaan inay faafin sida ugaar. Sayidka, saynisyahano ka California shaqeeyey noocyo kala duwan oo Isbedelo ee hiddawadayaasha of H7N9, si ay u arkaan waxa ay kaa caawin karaan fayraska inuu ka mid aadanuhu faafin.

Isbedelo fudud

Seynisyahanno la protein ah oo ku saabsan dusha sare ee fayraska loo yaqaan hemagglutinin H7 shaqeeya. Waxa ay u ogolaataa fayraska inay xidhxidhaan inay marti unugyada iyo iyaga qaadsiin.

Waxay ogaadeen in protein this awood u Isbedelo yar saddex acids amino helay dushiisa of virus in u ogolaanaya in ay ku xidho si fiican u receptors cell helay on unugyada aadanaha, sida marka la barbar dhigo unugyada avian.

In shaybaarka, saynisyahano ayaa soo saaray H7 haemagglutinin mutant sadex iyo ogaaday in ay si guul leh u helaan yaabaa shaan on unugyada ee shaybaarka unugyada dhuunta aadanaha.

waxaa jiri doona caamka ah?

xeerarka Safety mamnuucayo galo Isbedelo kuwaas oo fayrusyada kuwan H7N9, sidaas oo kale ayaa qorayaal daraasadda tilmaan in aanay abuuray fayraska, oo kaliya loo isticmaalo goosin ka benign dhanba. Isbedelo la dhabta ah H7N9 wakiil tijaabo la korodhay hawlaha viral in hadda mamnuuc (sababo cad).

Oo weliba, haddii ay ka cabsan natiijooyinkan? Waxa ay u muuqataa, weli ma. Fiona Kalli, takhasus u leh in immunology neefsashada ee Imperial College London, ayaa sheegay in fursadaha muujin isku mar ah oo dhan saddex Isbedelo "hooseeya marka loo eego."

"Daraasadan waxay naga caawin doontaa in ay dheeraad ah si taxadar leh loo xakameeyo khatarta la xariirta hargabka avian, iyo in la kordhiyo aqoonta waxa badala ee fayraska hargabka avian noqon kartaa khatar our," - ayay tidhi.