Russia to register first vaccine for COVID-19 on Aug 12😱😱😎

[dilshan87]

There's not much of details available with the Russian vaccine. But it's supposedly a modified version of a vaccine that they had developed for other diseases. It's quite similar to the Oxford developed vaccine. An adenovirus vector vaccine. But instead of one vector it uses two vectors and a second booster dose is required.

Machan is this a one time vaccine like Rubella or timely vaccine like influenza?

 

[Silly point]

bumpz

 

[imhotep]

Machan is this a one time vaccine like Rubella or timely vaccine like influenza?

The problem is that the long term effectiveness of any Covid vaccine is under question. Everyone has noticed that convalescent Covid patients lost their antibody levels very rapidly. About 70% -80% of the antibodies are gone within 3 months. This is alarming as the person can get reinfected.
Earlier with SARS, the antibodies lasted for about two years and with MERS about 34 months. But with Covid it's very different. If this is the case, then there will be NO herd immunity.

Other than the antibodies we also have T-cells. No one has made a specific T-cell study on convalescent Covid patients. The T cells are much better at recognising and killing virus-infected cells. But for Covid, antibodies are important in the lungs because T cells aren’t good at getting to airways.
Some vaccine developers are studying how they can trigger T-cells along with the antibodies.

So it looks like you will have to get a sort of booster every few months. But surely a vaccine will help to break the rapid spreading of the disease.

 

[pavithra_uk]

chinnu baya wela putin ta covid-19 genetic code eka deela

 

[privetek]

All debunked... There are no strains. These are what's called isolates. They belong to the same strain, even if they have some changes in their genome sequences.
These changes are simply a single nucleotide polymorphism of little or no consequence.
It's hard for me to explain in lay terms but believe me - there's one and only ONE strain of Wuhan Virus still now.

Reinfection case in Hong Kong

 

[imhotep]

Reinfection case in Hong Kong

I am not so sure about this. Reinfection was reported by other countries too, much earlier. It's a well known fact that the antibody count drops rapidly by three months and you are susceptible to be reinfected. That's the issue with the vaccine. Probably only would have short term effect. On the bright side the vaccine will help to manage the infection count. Without a vaccine the spreading of the disease cannot be effectively controlled.