ANDREA SHALAL  MOVES to bolster the IMF's emergency reserves could provide the $44 billion needed to vaccinate 70% of the population in lower- and middle-income countries by the end of 2022, at no added cost to rich countries, a new Rockefeller Foundation report finds. Finance officials from the Group of 20 major economies are expected to back a $650 billion new allocation of the International Monetary Fund's Special Drawing Rights (SDR) this week to help countries cope with the pandemic and its economic fallout. Vaccination rates and economic development are diverging widely across the globe, according to the IMF and…