The Director-General of the World Health Organization denounced what he described as the 'greed' of countries considering using booster COVID-19 vaccine doses at a time when many citizens of various countries are waiting for their first dose.

Ghebreyesus also warned of the global division in the delivery of vaccines, which until now remains uneven and inequitable.

The World Health Organization Director-General and his deputies have long criticized countries and manufacturers who conclude these contracts to obtain booster doses. 

Pfizer-BioNTech and other vaccine manufacturers intend to request a license to develop Covid-19 vaccine booster shots to enhance its efficacy, while the Delta variant is ripping through Asia and Africa and causing a high number of infections in Europe and the United States.

A few days ago, the US-German coalition, Pfizer-BioNTech, reported that it has data to support its repeated claim that the third dose of its vaccine would boost immunity through activating a high level of antibodies, including against the South African Beta variant.

The coalition also seeks US and European authorization for a third dose of its COVID-19 vaccine, expecting similar results for the Delta variant in ongoing tests.