United Nations Secretary-General Antonio Guterres reprimanded the world on Tuesday for the inequitable distribution of Covid-19 vaccines, describing it as an "obscenity" and giving the globe an "F in Ethics."

Addressing the annual UN gathering of world leaders in New York, Guterres said images from some parts of the world of expired and unused vaccines in the garbage told "the tale of our times" - with the majority of the wealthier world immunised while more than 90 percent of Africa has not even received one dose.

"This is a moral indictment of the state of our world...