'Vaccine nationalism' threatens global plan to distribute COVID-19 shots fairly

To avoid such a scenario, the World Health Organization and other international organizations have set up a system to accelerate and equitably distribute vaccines, the COVID-19 Vaccines Global Access (COVAX) Facility, which seeks to entice rich countries to sign on by reducing their own risk that they’re betting on the wrong vaccine candidates. But the idea has been put together on the fly, and it’s unclear how many rich countries will join.