"The United States will send 20 million doses authorized for use in the United States to help countries battling the pandemic by the end of June," Press Secretary Jen Psaki said.
The minister said the Pakistani government was undertaking all possible steps to contain the pandemic through timely decisions and effective preventive measures.
Patients in hospital with COVID-19 - not including those in intensive care - stood at 12,024 on Monday, down from 12,134 a day earlier.
There were 69 new admissions to intensive care units, slightly up from 60 on Sunday. The total number of intensive care patients fell to 1,754 from a previous 1,779.
"While we appreciate the work of AstraZeneca who have been steadily increasing the speed and volume of their deliveries, we need other manufacturers to follow suit," said WHO Director-General Tedros Adhanom Ghebreyesus at a virtual briefing, mentioning Pfizer and Moderna specifically.
The city-state has in recent days imposed some of the tightest restrictions since it exited a lockdown last year to combat a spike in local COVID-19 infections.
The WEF's next annual meeting will instead take place in the first half of 2022. Its location and date will be determined based on an assessment of the situation later this summer, it added in a statement.
With known global infections approaching 163 million and the rise of new variants complicating the fight, even the governments easing closures are warning citizens to remain careful.
The blue-chip FTSE 100 index inched 0.02% lower as heavyweight oil majors BP and Royal Dutch Shell and banking stocks, fell and a stronger pound weighed on the index.
Adam Zampa, Andrew Tye and Kane Richardson had left their IPL teams ahead of the larger Australian contingent, and were due to have completed quarantine last week.