Globally, COVID-19 cases have surpassed January’s peak to set a new record high, amid a growing disparity in vaccination rates between rich countries and the Global South. On Monday, youth climate activist Greta Thunberg said her foundation would donate $120,000 to the U.N.’s COVAX initiative to purchase vaccines for poorer nations.

Greta Thunberg: “It is completely unethical that high-income countries are now vaccinating young and healthy people, if that happens at the expense of people in risk groups and on the frontlines in low- and middle-income countries. And this is a moral test. We talked today about showing solidarity, and yet vaccine nationalism, it’s what’s running the vaccine distribution.”