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Sputnik Light can become a major booster for those vaccinated with inactivated Chinese COVID vaccines globally after China has officially recommended mix & match approach with adenoviral vector-based vaccines as boosters

MOSCOW, Feb. 28, 2022 /PRNewswire=KYODO JBN/ --

There are 2 billion people who have received inactivated Chinese vaccines in

the country and globally. As China has just authorized mix & match boosting

with domestic vaccines, the Russian one-shot Sputnik Light vaccine can become a

universal booster for those vaccinated with Chinese vaccines in other countries

around the world to strengthen and lengthen their protection against COVID.

Regulatory authorities of China have approved the mixing of domestic

inactivated vaccines against COVID (in particular, Sinovac and Sinopharm) and

use of a different vaccine, including adenoviral-based, as booster shot

providing yet another confirmation of the efficacy of mix & match approach

pioneered by the Russian Sputnik V vaccine in creating a stronger and more

durable immunity, including against the Omicron variant.

Vaccines produced by Chinese companies (Sinovac and Sinopharm) are widely used

with over 4.7 billion doses supplied in China and globally[1]. While China's

State Council has authorized mix & match boosting only with domestic

vaccines[2], the Russian one-shot Sputnik Light vaccine (the first component of

Sputnik V) can become a solution for boosting those initially vaccinated with

Chinese vaccines in other countries around the world.

Sputnik Light has already shown strong results used as a booster in mix & match

trials, including for inactivated vaccines. For example, the study conducted in

Argentina on Sputnik Light combination with other vaccines has shown that

antibody and T-cells response elicited by Sputnik Light as a booster to

inactivated Sinopharm vaccine is 10x higher vs two shots of Sinopharm. The

study also has demonstrated that each "vaccine cocktail" combination with

Sputnik Light with other vaccines like Moderna, AstraZeneca and Cansino had

provided a higher antibody titer on the 14th day after administering a second

dose when compared to original homologous (same vaccine as first and second

dose) regimens of each of the vaccines. Using Sputnik Light in combinations

with all other vaccines showed high safety profile with no serious adverse

events following the vaccination in any combinations.

The heterogeneous boosting approach ("vaccine cocktail" using human adenovirus

serotype 26 as the first component and human adenovirus serotype 5 as the

second component) pioneered by the Russian Gamaleya Center is at the core of

Sputnik V, the world's first registered vaccine against coronavirus. This

approach had proven successful in creating a longer and more durable immunity

against the coronavirus as demonstrated by the real-world data from Hungary,

San Marino, Argentina, Serbia, Bahrain, Mexico, UAE and other countries.

To date Sputnik Light has been approved in more than 30 countries with a total

population of over 2.5 billion and Sputnik V – in 71 countries with a total

population of over 4 billion people.

Sputnik V creates stronger and longer lasting immune response against COVID

(including the Omicron variant) than many other vaccines, which is further

strengthened by Sputnik Light booster. A unique comparative study[3] conducted

at Lazzaro Spallanzani National Institute for Infectious Diseases in Italy by a

team of 12 Italian and 9 Russian scientists led by Francesco Vaia, Director of

the Spallanzani Institute and Alexander Gintsburg, Director of the Gamaleya

Center has shown that Sputnik V vaccine demonstrates more than 2 times higher

titers of virus neutralizing antibodies to Omicron (B.1.1.529) variant than 2

doses of Pfizer vaccine (2.1 times higher in total and 2.6 times higher 3

months after vaccination).

The study was conducted in the equal laboratory conditions on comparable sera

samples from individuals vaccinated with Sputnik V and Pfizer with a similar

level of IgG antibodies and virus neutralizing activity (VNA) against Wuhan

variant. Sputnik V showed significantly smaller (2.6 times) reduction of virus

neutralizing activity against Omicron as compared to reference Wuhan variant

than Pfizer vaccine (8.1-fold reduction for Sputnik V in contrast to 21.4-fold

reduction for Pfizer vaccine).

Based on the data collected by the Spallanzani Institute and results of

previous studies, mix & match boosting with Sputnik Light is the best solution

to increase other vaccines' efficacy and extend the booster protection period

as optimal adenoviral platform configuration provides better protection against

Omicron and other mutations.

Sputnik Light and Sputnik V and have been developed using a safe technology

that has been widely studied for over 30 years and have not been associated

with rare serious side effects such as myocarditis or pericarditis.

The highest safety and efficacy of Sputnik V and Sputnik Light was demonstrated

in more than 30 studies and real-world data publications from more than 10

countries.

Sputnik V and Sputnik Light can be stored in a conventional refrigerator at +2

+8 degrees C for 6 months, making them available globally, including in remote

territories, without any need to invest in additional cold-chain infrastructure.

[1]

https://bridgebeijing.com/our-publications/our-publications-1/china-covid-19-vaccines-tracker/#Sinovac_8211_CoronaVac_COVID-19_Vaccine

[2]

https://www.scmp.com/news/china/article/3167691/china-allows-mixing-chinese-made-covid-19-vaccines-boost-immunity

[3] https://www.medrxiv.org/content/10.1101/2022.01.15.22269335v1

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Source: The Russian Direct Invest Fund (RDIF)