Are Chinese Vaccines The Most Effective Vs. Delta Variant?

Are Chinese vaccines the most effective vaccines against the Delta variant of COVID-19?

Find out what just went viral, and what the facts really are!


Claim : Chinese Vaccines Are The Most Effective Against Delta Variant!

This message has gone viral on WhatsApp, claiming that Chinese vaccines are superior to the Pfizer and Moderna mRNA vaccines, and are in fact, the most effective vaccines against Delta variant!

It is quite long, so just skip to the next section for the FACTS!

Israel DOES NOT use China vaccines at all,
but Israel uses only Moderna+Pfizzer vaccines, and that is why Israel has record number of daily cases now, and the number of daily cases in Israel is now higher than before vaccination started, and the vast majority of Israel people have already been vaccinated .

The reason for the failure to stop virus spread in Israel and also in Singapore,
is because Moderna+Pfizzer vaccines, are NOT EFFECTIVE against the delta variant, and the effectiveness will keep dropping every month.

Both Israel and Singapore made the same mistake, of naively and trusting in full, the USA fake news media claim, that wildly overstate the effectiveness of vaccines like Moderna+Pfizzer vaccines, and the same USA fake news media FALSELY CLAIM that China vaccines are not effective, but in the real world, China vaccines turn out to be the most effective, especially against the Delta variant .


Truth : Chinese Vaccines Are Not The Most Effective Vs. Delta Variant

The truth is – Chinese COVID-19 vaccines are decent, but they are hardly the most efficacious vaccines in the market.

And they are definitely NOT the most effective vaccines against the Delta variant.

This is just another piece of Chinese propaganda, and here are the reasons why…

Fact #1 : Israel Showed That Lockdowns Work

In their first wave, Israel declared a national state of emergency on 19 March 2020, and underwent a strict lockdown with travel restrictions.

In their second wave, they announced another set of lockdown measures from July to September 2020, which rapidly cut down the numbers by end of October 2020.

In their third wave, Israel initiated their third nationwide lockdown on 27 December 2020, which they started lifting in March 2021.

Fact #2 : Israel Currently Has Few COVID-19 Restrictions

By June 2021, masking was no longer required even indoors, and there are currently very few restrictions in Israel.

In spite of their high vaccination rate – 61.1% of their population are fully vaccinated – Israel has not achieved herd immunity.

Unfortunately, they got complacent and opened up too early. Coupled with the more transmissible Delta variant, this led to their fourth wave.

Read more : Delta Variant Of COVID-19 Can Infect In Seconds!

Fact #3 : Delta Variant Causes More Breakthrough Infections

We have known since June 2021 that the Delta variant of COVID-19 is partially-resistant to vaccines.

This allows it to cause more breakthrough infections, especially for those who are partially-vaccinated.

This is more of a problem for the AstraZeneca vaccine, and much less for the Pfizer vaccine used in Israel and Singapore.

Read more : Why Delta Variant Causes MORE Breakthrough Infections!

Pfizer AstraZeneca
1 Dose 2 Doses 1 Dose 2 Doses
Alpha (UK) 50% 93% 50% 66%
Delta (India) 33% 88% 33% 60%

Fact #4 : Vaccines Protect Against Hospitalisation + Death!

While the Delta variant can cause more breakthrough infections, COVID-19 vaccines offer excellent protection against hospitalisation and death.

What this means is the fully-vaccinated people who get infected by COVID-19 will usually experience a mild or even asymptomatic disease.

Pfizer AstraZeneca
1 Dose 2 Doses 1 Dose 2 Doses
Alpha (UK) 83% 95% 76% 86%
Delta (India) 94% 96% 71% 92%

Fact #5 : Sinovac CoronaVac Is LESS Effective

A large Brazilian preprint study was just released, comparing the efficacy of the Sinovac vaccine against the AstraZeneca vaccine.

This study which involved 60.5 million people confirmed that the Sinovac CoronaVac vaccine was less effective than the AstraZeneca Vaxzevria vaccine.

Even so, I must point out that the Sinovac vaccine offers significant protection against hospitalisation and death that unvaccinated people are at risk of.

Read more : AstraZeneca vs. Sinovac : Efficacy Against Gamma Variant

Protection Against AstraZeneca Sinovac
Infection 70.0% 54.2%
Hospitalisation 86.8% 72.6%
ICU Admission 88.1% 74.2%
Death 90.2% 74.0%

Fact #6 : Sinopharm BIBP Is LESS Effective

A recent study in Bahrain involving 1.24 million participants showed that the Sinopharm BIBP vaccine was less effective than the Pfizer Comirnaty vaccine, especially against the Delta variant.

The study showed that the Pfizer mRNA vaccine was 2.5X better at preventing infection, 10X better at preventing hospitalisation, 28.5X better at avoiding ICU admission and 7.5X better at preventing death.

But I must point out that the Sinopharm vaccine itself does a great job at preventing hospitalisation, ICU admission and death, compared to unvaccinated people.

It is just not as effective as the Pfizer vaccine, especially against the Delta variant.

Cases Per 100K
Per Week
Pfizer Sinopharm Unvaccinated
Infection 136.3 350.5 643.0
Hospitalisation 2.8 28.4 51.1
ICU Admission 0.08 2.29 6.39
Death 0.22 1.64 4.42

Fact #7 : China’s Success Due To Lockdown, Not Vaccines

China successfully kept COVID-19 cases flat since March 2020 through extremely strict lockdowns and preventive measures. This allowed them to avoid multiple waves that have afflicted many countries around the world.

We know that their success had nothing to do with the superiority of Chinese vaccines, because China itself has been busy exporting vaccines instead of using them.

Despite being the first to approve a COVID-19 vaccine (from Sinopharm), China only vaccinated 24 million people (1.6%) by the end of January 2021.

They have since ramped up vaccination, after India’s Delta variant crisis rattled them. But their continued success in preventing another COVID-19 wave has, currently, little to do with their vaccines.

Fact #8 : China To Offer mRNA Booster Dose For Sinovac + Sinopharm Vaccines

In July 2021, Caixin Global reported that China is planning to offer the Pfizer Comirnaty mRNA vaccine as a booster dose for citizens vaccinated with the Sinovac and Sinopharm vaccines.

This decision came after Chinese CDC deputy director Dr. Feng Zijian said that two Chinese COVID-19 vaccines are “less effective” against the Delta variant, compared to other strains.

This is a tacit acknowledgement by the Chinese government that the Sinovac and Sinopharm vaccines are not working well against the Delta variant.

Read more : China To Offer mRNA Booster Dose For Sinovac + Sinopharm!


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Dr. Adrian Wong has been writing about tech and science since 1997, even publishing a book with Prentice Hall called Breaking Through The BIOS Barrier (ISBN 978-0131455368) while in medical school.

He continues to devote countless hours every day writing about tech, medicine and science, in his pursuit of facts in a post-truth world.


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