Mexican President Andres Manuel Lopez Obrador is to ask US President Joe Biden to share some of the 19-month-old Covid vaccine, according to a Mexican government official briefed on the talks.
The two leaders are scheduled to hold a bilateral virtual meeting on Monday.
What the collaboration might look like – a purchase agreement, a donation or a loan – is indefinite, the official told CNN.
The first step is to ask whether the United States is willing to cooperate, the source said.
Mexico has purchase contracts in place for hundreds of millions of doses of vaccine with various vaccine manufacturers around the world, the vast majority of which have not yet been met.
It also purchased vaccine supplies from both Russia and China, but did not receive any vaccines directly from the United States, its most important ally and largest trading partner.
Pfizer, an American company, delivered Covid-19 vaccines to Mexico – but they were produced in European laboratories and arrived in relatively limited quantities.
On Sunday night, Mexico reported receiving just under 2.5 million doses of coronavirus vaccines.