The Russian Direct Invest Fund (RDIF): Approval of mixing and matching of COVID booster shots by FDA is yet another confirmation of efficacy of vaccine cocktail approach pioneered by the Russian Sputnik V vaccine : vimarsana.com
Sputnik V pioneered the heterologous boosting approach through combination of human adenovirus serotype 26 as the first component and human adenovirus serotype 5 as the second component. RDIF