“We need to avoid at all costs a scenario of a two-speed world where only the richer can protect themselves against the virus and restart normal lives,” French President Emmanuel Macron told the summit.

he Astra vaccine costs a fraction of the price set by Pfizer and will be manufactured in multiple countries, from India to Brazil. It should be easier to deploy far and wide than other shots that need to be stored at ultra-cold temperatures. But if the U.K. partners can’t match the lofty efficacy levels Pfizer and Moderna delivered or roll out their inoculation quickly, the pandemic might continue spreading death and disease in countries relying on it.

“Translating pharma lingo: the announced price of Pfizer of USD 19.50 and Moderna of USD 25-USD 37 per dose actually means their price of USD 39 and USD 50-USD 74 per person. Two doses are required per person for the Pfizer, Sputnik V and Moderna vaccines. The price of Sputnik V will be much lower,” the official account said.

He also said Europe had much to learn from Asian countries. “One has to react quickly to the virus, robustly and decisively,” he said. “Especially at the start, when the virus is still spreading very slowly in different communities. If you react half-heartedly, the problem will get bigger very quickly.”

Some 70% of the U.S. population of 330 million would need to be inoculated to achieve “herd” immunity from the virus, a goal the country could achieve by May, according to Dr. Moncef Slaoui, chief scientific adviser for “Operation Warp Speed.”

“The COVID-19 pandemic and its unprecedented impact in terms of lives lost, livelihoods and economies affected, is an unparalleled shock that has revealed vulnerabilities in our preparedness and response and underscored our common challenges,” the final communique said.

G20 nations will work to “protect lives, provide support with a special focus on the most vulnerable, and put our economies back on a path to restoring growth, and protecting and creating jobs for all”.

On vaccines, tests and treatments, the leaders said: “We will spare no effort to ensure their affordable and equitable access for all people.”

Citing government sources, it said British regulators were about to start a formal appraisal of the vaccine, made by Pfizer Inc and BioNTech SE, and that the National Health Service had been told to be ready to administer it by Dec. 1.

The U.S. Food and Drug Administration said on Friday that it would meet on Dec. 10 to discuss whether to authorise the vaccine.