WASHINGTON, November 22 (Reuters): Leaders of the world's 20 biggest economies on Sunday will pledge to pay for a fair distribution of COVID-19 vaccines, drugs and tests around the world so that poorer countries are not left out, and to extend debt relief to them, a draft G20 communique showed. "We will spare no effort to ensure their affordable and equitable access for all people, consistent with members’ commitments to incentivize innovation," the leaders