New Delhi, Nov. 27 -- UK pharmaceutical company AstraZeneca may try to boost the efficacy of its coronavirus vaccine by combining it with a shot of Russian Covid-19 vaccine Sputnik V, the Russian Gamaleya research institute has suggested recently.

Taking to Twitter, the Gamaleya research institute wrote, "Current full dose AstraZeneca regimen resulted in 62% efficacy. If they go for a new clinical trial, we suggest trying a regimen of combining the AZ shot with the #SputnikV human adenoviral vector shot to boost efficacy. Combining vaccines may prove important for revaccinations."

On Monday, AstraZeneca released interim results of its candidate vaccine showing two different levels of efficacy depending on the dosing regimen. Efficacy in...