<p>Russia will complete early-stage trials on a second potential Covid-19 vaccine produced by the Vector Institute on September 30, the RIA news agency cited Russia's consumer health safety watchdog as saying on Monday.</p>
<p>Russia will complete early-stage trials on a second potential Covid-19 vaccine produced by the Vector Institute on September 30, the RIA news agency cited Russia's consumer health safety watchdog as saying on Monday.</p>