Suurbritannias vaktsineeritud inimesed (1st dose): 46,689,242

People Vaccinated in the UK (2nd dose): 37,610,911

Kuidas vaktsiinid kehas toimivad, kui neid võetakse?

kõrval | jaan. 14, 2021 | Artiklid, Teave | 0 kommentaari

Oxfordi ülikool / AstraZeneca

Type of vaccine

Viirusvektor (geneetiliselt muundatud viirus)

 

Viirus COVID-19 kasutab keha rakkudesse sisenemiseks ja haiguste tekitamiseks oma välispinnal olevaid valke, mida nimetatakse piikvalkudeks. 

 

The vaccine is made up of another virus (of the adenovirus family) that has been modified to contain the gene for making the SARS-CoV-2 (COVID-19) spike protein (the part of the virus that allows it to enter human cells). The adenovirus itself cannot reproduce and does not cause disease. 

 

Pärast vaktsiini manustamist toimetab vaktsiin SARS-CoV-2 geeni organismi rakkudesse. Rakud kasutavad piigi valgu tootmiseks geeni. Inimese immuunsüsteem käsitleb seda naastvalku võõrana ja tekitab selle valgu vastu looduslikke kaitsemehhanisme - antikehi ja T-rakke. 

 

Kui vaktsineeritud isik puutub hiljem kokku SARS-CoV-2-ga, tunneb immuunsüsteem viiruse ära ja on valmis seda ründama: antikehad ja T-rakud võivad koos töötada viiruse tapmiseks, takistada selle sattumist organismi rakke ja hävitavad nakatunud rakke, aidates seeläbi kaitsta COVID-19.

Meie missioon

Meie missioon

Type of vaccine

The jabs are known as a messenger RNA (mRNA) vaccine. It uses synthetically produced genetic material called mRNA, which encodes the instructions to produce the SARS-CoV-2 (COVID-19) spike protein (the part of the virus that allows it to enter human cells).

The injection inserts this mRNA into the body. This then enters cells, which read the genetic code and start producing the virus protein – thus triggering a response by the immune system and coaching it to fight a future infection.

The mRNA molecule is not injected directly into the body, but is wrapped in oily bubbles made of lipid nanoparticles, to prevent our natural enzymes from breaking it down.

The jab uses mRNA produced in the lab by a template DNA, and doesn’t use a virus, unlike conventional vaccines which are produced using weakened forms of the virus. This can make the rate at which it can be produced or modified dramatically accelerated.

Meie missioon

The difference between the Pfizer / BioNTech and Moderna vaccines to the Oxford University / AstraZeneca vaccine is that the former uses mRNA as its platform, while the latter uses DNA, which is delivered to the cells by using a weakened version of a common cold virus.

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