Advanced economies face a significant hit to their economic recovery from the coronavirus pandemic unless they help developing countries speed up their vaccination programs, according to a report that will be published by the World Health Organization on Monday. If the rollout of vaccines in developing countries continues on its current trajectory, advanced economies face output losses of up to $2.4tn — 3-5 per cent of their annual gross domestic product before the pandemic — because of disruptions to global trade and supply chains, the study said.

“The longer we wait to provide vaccines, tests, and treatments to all countries, the faster the virus will take hold, the potential for more variants will emerge, the greater the chance today’s vaccines could become ineffective, and the harder it will be for all countries to recover,” said Tedros Adhanom Ghebreyesus, director-general of the WHO. “No one is safe until everyone is safe. ”

The research illustrates the interconnected nature of the global economic recovery and means that even if the world’s leading nations succeed in vaccinating their vulnerable populations promptly, they still face significant economic vulnerabilities from the pandemic.

“Emerging and developing economies are linked to advanced economies through exports and imports, and not just of finished goods,” said Sebnem Kalemli-Ozcan of the University of Maryland, lead author of the report. ‘If those countries don’t get the vaccine or get it late, they are not going to recover, they are not going to supply the intermediate goods needed by advanced economies and they won’t have the same level of demand for advanced economy exports. ”

Overall a delay in bringing the pandemic under control in emerging economies would wipe about $4-4tn off the world’s output this year, or about 5-7 percent of annual global output before the pandemic, according to the research, which was commissioned by the International Chamber of Commerce and has been seen by the Financial Times. More than half the impact would fall on high-income countries, the study found.