On Monday, more than 2 million nurses from 28 countries filed a complaint with the United Nations, demanding an investigation into wealthy countries that have blocked a proposed patent waiver for COVID-19 vaccines. The nurses accuse the governments of protecting the profits of big pharmaceutical companies at the expense of public health. 

Chinese President Xi Jinping has pledged to deliver 1 billion doses of COVID-19 vaccines to Africa — on top of the nearly 200 million doses China has already supplied. Only about 10% of Africans have received one vaccine dose, compared with 64% in North America.