Up to 100 million additional doses of any eventual Covid-19 vaccines will be secured for delivery to poorer countries next year, health groups announced on Tuesday, as the virus showed no sign of receding after claiming more than one million lives around the world.

The announcement doubles the number of doses already secured from the Serum Institute of India by the Gavi vaccine alliance and the Bill & Melinda Gates Foundation, following an initial agreement last month.

The public-private health partnership stressed that the eventual total is “potentially several times” greater, and said the price would be capped at $3 per dose.

“No country, rich or poor, should be left at the back of the queue when it comes to Covid-19 vaccines. This collaboration brings us another step closer to achieving this goal,” Gavi chief Seth Berkley said.

As nine vaccine candidates are in last-stage trials, the World Bank said on Tuesday it had asked its board of directors to approve $12 billion to help poor countries purchase and distribute vaccines.

A World Bank spokesman said: “The global economy will not recover fully until people feel they can live, socialise, work and travel with confidence”.

As humanity struggles against Covid-19, the World Health Organisation said this week that some 120 million rapid tests will soon be made available to low- and middle-income countries if funding can be secured.

The kits – faster, cheaper and easier to administer than standard polymerase chain reaction (PCR) swab tests, but also less reliable – will be rolled out across 133 countries in the next six months.

UN Secretary-General Antonio Guterres said on Tuesday that “responsible leadership matters” in steering the world through the pandemic.

“Science matters. Cooperation matters, and misinformation kills,” he warned, urging people to respect familiar infection control measures like hand-washing, distancing and mask-wearing.

Case numbers are climbing rapidly in Europe, where governments are clamping down on movement in an attempt to curb the surge.

Germany introduced new limits on the number of people who can attend private events, after Spain, France, Britain and Northern Ireland all imposed fresh restrictions.

In Britain, Prime Minister Boris Johnson appeared to share general confusion about his government’s measures, apologising after wrongly saying that rules limiting gatherings in northeast England to no more than six people did not apply outdoors.