COVAX , the World Health Organization-led initiative to provide equitable worldwide access to vaccines, said it has signed agreements with Chinese pharmaceutical companies for up to more than 500 million doses of their COVID-19 vaccines. Gavi, the public-private entity co-leading the vaccine effort with the WHO, announced the deal with Sinopharm and Sinovac in a statement Monday, saying the agreements will immediately rush 110 million doses to COVAX Facility participants ...