The United Kingdom is hosting the event, to be attended by heads of government from the US, Canada, France, Germany, Italy and Japan.
The G7 leaders are meeting in person for the first time in two years due to the coronavirus pandemic.
"In the past year the world has developed several effective vaccines against coronavirus, has licensed and manufactured them at a good pace and is now putting them in the hands of the people who need them (...), but to really defeat the coronavirus and recover we have We have to prevent a pandemic like this from happening again, "said the British Prime Minister and host of the G7 summit, Boris Johnson".
Global access to COVID-19 vaccines and urgent action to tackle climate change are amongst the issues of concern to Anglican leaders from G7 countries as leaders of the seven wealthiest nations gather in Cornwall, England, for their annual summit.
The Group of Seven summit is set to open soon in Cornwall, southwestern Britain, on Friday afternoon.
After Friday's talks, the leaders were joined the Queen for a dinner at the nearby Eden Project.
The leaders are debating a pledge to protect at least 30 percent of the world's land and oceans by 2030. The G7 summit was shaping up to potentially be one of the most consequential in recent memory with a pandemic raging in much of the world, a global economy still in shock and threats rising from Russian Federation and China, CNN reported.
On Saturday's foreign policy agenda, this year's coup in Myanmar and crackdown on pro-democracy supporters in Belarus are expected to figure, alongside tensions with Russian Federation and China.
The steps to prevent future pandemics include slashing the time taken to develop and license vaccines, treatments and diagnostics for any future disease to under 100 days.
Devon and Cornwall Police confirmed officers carried out a vehicle stop on a auto and a van near Loggans Road in Hayle - about seven miles from the Carbis Bay Hotel.
"That means learning lessons from the last 18 months and doing it differently next time around".
WHO chief Tedros Adhanom Ghebreyesus, criticised in some quarters for being too accommodating of China, welcomed the health pact.
Northern Health sees just five new cases of COVID-19
The number of people battling COVID-19 in hospital increased slightly on Tuesday to 203, with 57 patients in intensive care. However, of the almost 3.7 million doses of vaccine that have been administered, less than 346,000 are second doses.