The one-shot Sputnik Light vaccine authorized in Tunisia as a universal booster

Moscow, December 29, 2021 – The Russian Direct Investment Fund (RDIF, Russia’s sovereign wealth fund) announces the approval of the Russian one-shot Sputnik Light vaccine against coronavirus as a universal booster shot by Tunisia’s Ministry of Health.

Sputnik Light is based on recombinant human adenovirus serotype number 26 (the first component of Sputnik V). A one-shot vaccination regimen of Sputnik Light provides for ease of administration and helps to increase efficacy and duration of other vaccines when used as a booster shot. Sputnik Light has already been authorized in more than 30 countries.

Clinical studies and the real-world data in many countries have demonstrated that Sputnik Light is a safe and effective vaccine when used both on a standalone basis and as a booster.

A study in Argentina on heterogeneous regimens combining Sputnik Light and vaccines produced by AstraZeneca, Sinopharm, Moderna and Cansino has demonstrated that Sputnik Light is an effective universal booster. Each “vaccine cocktail” combination with Sputnik Light provided higher antibody titer on 14th day after administering the second dose as compared to original homogenous (same vaccine as first and second dose) regimens of each of the vaccines.

A preliminary study of the Gamaleya Center has found Sputnik Light significantly increases virus neutralizing activity against Omicron based on sera 2-3 months after revaccination with 100% of individuals revaccinated with Sputnik Light as a booster having developed neutralizing antibodies against this variant. Sputnik Light booster is recommended to strengthen efficacy of vaccines against Omicron. Boosting by Sputnik Light can strengthen and lengthen the quickly waning efficacy of many vaccines in light of combined Delta and Omicron challenge.

Sputnik Light efficacy data:

  • Sputnik Light has been proven to be safe and highly effective by real-world vaccination data. In particular, data from the Ministry of Health of Buenos Aires (Argentina) has demonstrated standalone efficacy of Sputnik Light between 78.6-83.7% among the elderly (over 40,000 people of 60-79 years old), which is higher than that of many two-dose vaccines.

  • Findings by the Gamaleya Center based on data collected in Moscow have demonstrated Sputnik Light vaccine administered standalone has 70% efficacy against infection from the Delta variant of coronavirus during the first three months after vaccination. The vaccine is 75% effective among subjects under the age of 60. Sputnik V vaccine COVID 19 Russian Direct Investment Fund and Sputnik Light are based on a safe and effective human adenoviral vector platform and have not been associated with rare serious adverse events following vaccination, such as myocarditis or pericarditis.

In January 2021 the Sputnik V vaccine covid 19 was also authorized in Tunisia. To date it is approved in 71 countries with total population of over 4 billion people.


Russian Direct Investment Fund (RDIF) is Russia's sovereign wealth fund established in 2011 to make equity co-investments, primarily in Russia, alongside reputable international financial and strategic investors. RDIF acts as a catalyst for direct investment in the Russian economy. RDIF’s management company is based in Moscow. Currently, RDIF has experience of the successful joint implementation of more than 100 projects with foreign partners totaling over RUB2.1 tn and covering almost all of Russia’s regions. RDIF has established joint strategic partnerships with leading international co-investors from more than 18 countries that total more than $40 bn. Further information can be found at

For additional information contact:

Alexey Urazov
Russian Direct Investment Fund
Director for External Communications

Mobile: +7 915 312 76 65
E-mail: [email protected]

Andrew Leach / Maria Shiryaevskaya
Hudson Sandler

Tel: +44 (0) 20 7796 4133

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