US President Donald Trump’s government has already secured future supplies through bilateral deals, prompting accusations of selfish behaviour to the detriment of poor countries. China, where the coronavirus was first reported, was also missing on the list of 64 rich nations who joined the so-called Covax plan to deliver 2 billion vaccine doses round the world by the end of 2021, prioritising health care workers and the vulnerable. But alliance officials said dialogue continued with Beijing.