Ko shiri furuwenza kuti mutate uye kuti denda pakati vanhu?

Masayendisiti zvidzidzo rabhoritari kuedza umo akaratidza kuti pasi pokudzora vatatu nyore kunotouraya ose Avian yokuSpain angawana kugona kupararira kubva kune mumwe munhu.

Asi usatya kutsvaka sutu uye kudzivirira utachiona: vaongorori havana kushandura utachiona pacharo (tava zvose kuona mafirimu zvakakwana pamusoro njodzi kudzivisa kukanganisa ichi). Mukupesana, incredible tsvakurudzo izvi zvichabatsira masayendisiti kugara mberi utachiwana kuti asashandiswe zvinogona kupararira.

How ngozi shiri besa

Vatsvakurudzi aifarira kugozha inonzi Avian yokuSpain A (H7N9). Maererano neWHO, muna 2013, utachiona ichi kwakakanganisa vanhu vanopfuura 900. Kunyange zvakadaro, ruzhinji vanenge vakanga chokuita vanhu vanoshanda mune yehuku sezvo utachiwana pachayo haina kukwanisa zvikasiyanasiyana muvanhu.

In zvakaipisisa nyaya, utachiona anogona mutate muchimiro kuti aigona kupararira muvanhu, uye zvinogona kutanga akakurumidza kupararira. Saka, masayendisiti wokuCalifornia akashanda siyana kunotouraya vari genome pamusoro H7N9, kuona chii chingakubatsira utachiona kupararira muvanhu.

nyore kunotouraya

Masayendisiti ari kushanda puroteni pamusoro pemvura utachiona anonzi hemagglutinin H7. Kunoitawo utachiona kusunga kugara naHama masero uye kombera navo.

Vakawana kuti mapuroteni ichi anokwanisa kunotouraya vaduku vatatu amino acids yakawanikwa pamusoro pechiso utachiona anobvumira kuti nani sunga nechitokisi receptors zvakawanikwa masero sevanhu zvichienzaniswa masero Avian.

Murabhoritari, masayendisiti yabudisa nekatatu mutant haemagglutinin H7 uye vakawana kuti vaizobudirira kuwana nzvimbo pamusoro masero ari munhu trachea tishu ivhu.

Pachava dambudziko?

Safety mitemo rambidza panopindwa kunotouraya idzi nemavhairasi izvi H7N9, saka vanyori pakudzidza kutara kuti havana kusikwa utachiona, uye chete akashandisa benign chinyorwa chacho. Kunotouraya pamwe H7N9 chaiko inomiririra kuedza pamwe yakawedzera nemavhairasi mabasa kuti dziri hazvitenderwi (nezvikonzero pachena).

Asi, kana kuti kutya Zvakawanikwa izvi? Zvinoita sokuti, kuchigere. Fiona Kalli, nyanzvi mune kufema Immunology pa Imperial College London, anoti mikana ine mawa kuratidzwa ose matatu kunotouraya "nekaupenyu pasi."

"Kudzidza uku kuchatibatsira kunyatsofunga kudzora ngozi chokuita Avian yokuSpain, uye kuwedzera zivo yedu inoshanduka chii muna Avian yokuSpain utachiona kunogona kuva nengozi," - iye akati.