Serum Institute of India will make up to 200 million COVID-19 vaccine doses for poorer countries, including India, next year, as the Bill & Melinda Gates Foundation and GAVI vaccines alliance have doubled their funding, the company said to Reuters on Tuesday.

The extra funds will help Serum boost the manufacturing of the vaccine candidates from AstraZeneca Plc and Novavax Inc, for delivery under the COVAX scheme as early as the first half of 2021, it said.

The collaboration takes forward an initial agreement signed in August by Serum, GAVI, and the Gates Foundation for 100 million doses to be priced at a maximum of $3 each. The total funding provided is now $300 million, and the expanded collaboration also has an option for the provision of additional doses as needed, it added.

The so-called COVAX plan, co-led by the World Health Organization (WHO) and GAVI, aims to deliver 2 billion vaccine doses around the world by the end of 2021. More than 150 nations have joined the plan, though China and the United States have not signed up, the report further added.