Fears not enough Covid-19 vaccines for the world as rich  countries lock in deals   

Moves by the US and the UK to secure supplies from Sanofi and partner GlaxoSmithKline, and another pact between Japan and Pfizer, are the latest in a string of agreements. Picture: AP/Ted S. Warren

Wealthy countries have already locked up more than a billion doses of coronavirus vaccines, raising worries that the rest of the world will be at the back of the queue in the global effort to defeat the pathogen.

Moves by the US and the UK to secure supplies from Sanofi and partner GlaxoSmithKline, and another pact between Japan and Pfizer, are the latest in a string of agreements.