British Prime Minister Boris Johnson called for a "new era of global health co-operation" as he prepared to host a vaccine fundraising summit on Thursday under the shadow of coronavirus.

The virtual meeting aims to raise $7.4 billion for immunization programs stalled by the pandemic, and will see the launch of a new fundraising drive to support potential COVID-19 vaccines.

"I hope this summit will be the moment when the world comes together to unite humanity in the fight against disease," Johnson said in a statement.

He said he hoped it would "inaugurate a new era of global health co-operation, which I believe is now the most essential shared endeavor of our lifetimes".

More than 50 countries are taking part in Thursday's meeting, as well as individuals such as philanthropist Bill Gates, and will raise funds for Gavi, the vaccine alliance.

Over the next five years, it wants to reboot halted programs in the countries it supports -- allowing them to access vaccines at a much-reduced cost -- with the goal of reaching some 300 million children.  

Gavi and its partners will also launch a financing drive to purchase potential COVID-19 vaccines, scale-up their production and support delivery to developing nations.

The pandemic has exposed new ruptures in international cooperation, notably with US President Donald Trump's decision to pull out of the World Health Organization (WHO).

But Johnson warned that countries such as Britain -- which has suffered the worst coronavirus death toll in Europe -- would benefit from helping developing countries.

"This support for routine immunizations will shore up poorer countries' healthcare systems to deal with coronavirus -- and so help to stop the global spread," he told reporters on Wednesday.

"This virus has shown how connected we are. We're fighting an invisible enemy. And no one is safe frankly until we are all safe."

The coronavirus pandemic has killed more than 380,000 people since it emerged in China last December.

BDST: 1102 HRS, JUN 4, 2020
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