The COVAX facility, backed by the World Health Organization (WHO) and the Global Alliance for Vaccines and Immunization (GAVI), aims to secure 2 billion vaccine doses for lower-income countries by the end of 2021.   

The COVAX vaccine-sharing facility urgently needs 190 million doses by the end of June to fill a gap left by India halting vaccine exports, as the virus surges in South Asia, the GAVI vaccine alliance and World Health Organization said on Thursday.

"We need an additional US$2 billion to lift coverage in (advance market countries) up to nearly 30%, and we need it by June 2 to lock in supplies now so that doses can be delivered through 2021, and into early 2022," they said in a statement.

"At least one billion doses could be shared by wealthy countries in 2021," it said.

Reuters