Russia's second vaccine '100% effective', watchdog tells media

Reuters|
A candidate COVID-19 vaccine known as EpiVacCorona, Russia's second to be registered, proved "100% effective" in early-stage trials, Russian consumer health watchdog Rospotrebnadzor has told local media.
The data, based on Phase I and II trials, were released before the start of a larger Phase III trial which would normally involve thousands of participants and a placebo group as a comparison.
"The effectiveness of the vaccine is made up of its immunological effectiveness and preventative effectiveness," the TASS news agency reported, citing Rospotrebnadzor.
"According to results of the first and second phases of clinical trials, the immunological effectiveness of the EpiVacCorona vaccine is 100%."
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