By Pear Maneechote

 

A single dose of the Sinovac and Sinopharm vaccines is only 13.8 per cent effective against the new Delta variant, a recent study conducted in Guangzhou, China shows.

 

The research shows that while two shots of the Chinese vaccines are effective at, 59 per cent in preventing the Delta strain and 70.2 to 100 per cent effective at preventing severe symptoms caused by the variant, a single shot of the vaccines was only 13.8 per cent effective in preventing COVID-19 infections.

 

The research shows that two doses are the minimum necessary to fight the new Delta variant and prevent severe symptoms, said Zhong Nanshan, China’s leading epidemiologist and co-author of the study. 

 

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Full story: https://www.thaienquirer.com/31677/chinese-made-vaccines-not-effective-against-delta-variant-after-one-dose/

 

-- © Copyright Thai Enquirer 2021-08-25

 

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Sad that the thing originated there and they ironically don't have a good vaccine...

Not only that, after 2 shots, Sinovac's half life is only 40 days. No wonder so many are getting infected.  I have 2 friends now in ICU with Covid. Both have had their 2 shots of Sinovac.

 

Edited August 24, 20214 yr by Gold Star
spelling

Only way out of this Chinese mess for Thailand is STOP BUYING CHINESE VACCINES !!!

there suppose to be data for each of those mentioned vaccines.

I don't see it.

How research can be done without knowing which patients had one of those vax?

Or were they given at random 2 different vax?

Or 2 vaxes were mixed in each shot?

 

also, in good, well researched article, would be the other vaxes mentioned, to compare.

Unfortunately, for delta non of existing now vaxes are good, hence next, very unexpected, waves.

Even pfizer is around 50% (so it does appear lower, than sinovac and sinopharm).

This recent study shows 66% effectiveness of the other vax against delta - some 7% better, than sinovac and sinopharm, so not that much

https://www.indiatoday.in/coronavirus-outbreak/story/vaccine-effectiveness-delta-variant-covid-19-wanes-time-us-cdc-1844894-2021-08-25

 

I would still go for any paid for vax (just to get better chance than relying on free ones from the unreliable government)

 

Edited August 24, 20214 yr by internationalism

So the protection these Chinese vaccines after two doses offer is similar to the 60% of Astra Zeneca against Delta. That said the efficacy of AZ after a single dose is higher at around 30%. 
The vaccines by Pfizer and Moderna have a much higher starting efficacy, but also weaken much quicker than AZ or Sinovac. It’s estimated that 4 or 5 months after the second jab the efficacy will be similar to AZ at that time, hence the need for boosters with these MRNA vaccines within 8 months when efficacy will likely be below 20% as indicated by a recent Israeli study. 

"Hello General.... It doesn't work no, but we can give you a 30% discount on another 10 million doses"

8 minutes ago, ourmanflint said:

"Hello General.... It doesn't work no, but we can give you a 30% discount on another 10 million doses"

there are no discounts in thailand, only envelopes

Go figure.  

Just had my 2nd Sinopharm, now planning a booster, Astrazeneca or Pfizer

Troll post reported and removed.

 

2 hours ago, webfact said:

 

A single dose of the Sinovac and Sinopharm vaccines is only 13.8 per cent effective against the new Delta variant, a recent study conducted in Guangzhou, China shows.

So, we are expected to believe a study from a country that lies about virtually everything.

 

I'm sure this study was different, though. Unlikely they lied or manipulated data here. I trust my health to them. ????????

Stop the press!

2 hours ago, Gold Star said:

Not only that, after 2 shots, Sinovac's half life is only 40 days. No wonder so many are getting infected.  I have 2 friends now in ICU with Covid. Both have had their 2 shots of Sinovac.

 

It's this that should be the headline. This is the primary vaccine used in Thailand.

I teach Brazilian adults online. They say many have had 2 shots of Sinovac. They now say the govt will soon mandate a third dose of something else.

Surely, if it is 13.8% effective then it is inaccurate to state it is 'not effective'. That would be 0%. Less effective than other vaccines perhaps,  but still slightly effective.

2 hours ago, Gulfsailor said:

hence the need for boosters with these MRNA vaccines within 8 months when efficacy will likely be below 20% as indicated by a recent Israeli study. 

delta hasn't been around that long, where are you reading this nonsense

It obviously is not the best vaccine.

From this and a few other studies, it appears it does work but for a limited time.

So, a booster in a few months after the second dose seems to be in order.

Also, in Singapore quite a few people were jabbed with it and they are doing a study.  That should be more reliable and interesting to see the results.

Edited August 24, 20214 yr by bkk6060

An attempt was made to contact the researchers in Guangzhou for further comment but they seem to have disappeared. 

3 minutes ago, bkk6060 said:

It obviously is not the best vaccine.

From this and a few other studies, it appears it does work but for a limited time.

So, a booster in a few months after the second dose seems to be in order.

 

The government already announced they intended to push for an mRNA booster to those fully vaccinated with Sinovac. It's not news that they already have been dishing out AZ boosters to front line staff, because they don't have enough mRNA. No word when the rest of the population who got Sinovac might expect that intention to be a reality. Sometime after everyone is vaccinated I imagine.

 

Right now, even two does of Sinovac moves the needle to pats on the back and congratulations to a job well done in % of vaccinated overall.

 

Sinovac served a purpose as the first off the line vaccine rolled out in the face of the initial strain. It was appropriate and no doubt saved lives. The virus has moved and to be dishing this out still, knowing it to be ineffective at best, is putting lipstick on a pig. 

And Thailand's strategy is based on a 1st jab of one of these followed up by an AZ. It would seem logical, or even a life saving measure, to just take this stuff off the meny...... or is it just too lucrative for a few at the top! The people are losing faith in it and likely it can only be used on the desperate or ignorant. 

28 minutes ago, smedly said:

delta hasn't been around that long, where are you reading this nonsense

Just because you didn´t find the information, it does not have to be nonsense.

Delta is just a more infectious strain, but also a weaker compared to earlier ones. For that reason, the booster shots are more for the stronger and more deadly strains, than specifically for the Delta strain and it´s probably even weaker variants.

As for the earlier and stronger strains there is enough information, hence the information about booster shots in a quite large amount of studies around the world.

 

However, the race for buying as much Sinovac as possible must come to an end. What they are doing, is killing off their own population.

Edited August 24, 20214 yr by Gottfrid

Just now, Gottfrid said:

Delta is just a more infectious string,

'Strain' works better here. 

2 minutes ago, jacko45k said:

'Strain' works better here. 

Thanks! Right and corrected. ???? 

To be honest, I'm not surprised by thr result, it's pretty much confirms the already existent common perception, I am rather amazed, though, we've got anything negative coming out of China.

3 hours ago, Bohemianfish said:

Sad that the thing originated there and they ironically don't have a good vaccine...

They have nothing to copy  like they do with everything else.!!!!!

https://www.who.int/news-room/feature-stories/detail/the-sinovac-covid-19-vaccine-what-you-need-to-know?gclid=Cj0KCQjwsZKJBhC0ARIsAJ96n3ULRu2UFWZDMp9ao7YgfUSBq0agOf87JtBKxs1f09EknNDt52j1YqwaAmDtEALw_wcB

 Safer, simply because vaccines made from "killed" virus have a long, documented record. Sinovac is at least as efficacious as influenza vaccines.

4 hours ago, webfact said:

A single dose of the Sinovac and Sinopharm vaccines is only 13.8 per cent effective against the new Delta variant, a recent study conducted in Guangzhou, China shows.

That explains a lot... Prayuts go-to preference.

1 hour ago, DaveSamutP said:

So, we are expected to believe a study from a country that lies about virtually everything.

 

I'm sure this study was different, though. Unlikely they lied or manipulated data here. I trust my health to them. ????????

And do you really think that Pfizer , Moderna , JJ OR Az are squeaky clean when it comes to there data , all have paid out multi miilions in fines over the years .

Why did this government purchase this vaccine.  Seem someone wanted to purchase it from there buddies.  I wonder what they got in exchange for this.  Someone should be removed from office for thinking anything from China would work.