Statement issued by Germany listed Bangladesh, Costa Rica, Fiji, Ghana, Pakistan, the Philippines and Senegal as some of the initial recipients of Global Shield packages
COVAX is co-led by the WHO, the GAVI vaccines alliance, the Coalition for Epidemic Preparedness Innovations (CEPI) and the United Nations children's fund UNICEF.
"We will not accept what we know is a fraudulent outcome of these elections and we will take all legitimate steps to reverse this tragedy of justice," John Mahama told a news conference.
Observers viewed polling as generally free and fair but the political climate soured late Tuesday when Mahama accused his rival of showing "credentials that are very undemocratic".
But the skilled communicator has brushed aside the criticism, making ambitious promises to build infrastructure, create jobs and modernise the country.