The Group of Seven leaders are expected to issue a declaration at their ongoing summit that calls for the development of vaccines and treatments within 100 days during future health crises.
The talks began in Cornwall, Britain, on Friday. They plan to hold discussions about preventing pandemics on Saturday.
The British government says the declaration is also expected to call for support to reform and strengthen the World Health Organization.
British Prime Minister Boris Johnson said the G7 must learn lessons from the coronavirus pandemic.
The leaders are also expected to collectively offer one billion coronavirus vaccine doses to the rest of the world.