Argentina Government has signed on Monday a supply deal with Moderna Inc for 20 million doses of its COVID-19 vaccine or its updated variant booster vaccine candidate.

The company said delivery was likely to begin in the first three months of 2022.

Last week, Argentina said it was looking to sign a supply agreement with the U.S. vaccine maker, in an attempt to accelerate the vaccination of its population and sidestep a possible third wave of the coronavirus.

So far, the country’s vaccine program has been largely built around Russia’s Sputnik V vaccine, China’s Sinopharm and the AstraZeneca Plc vaccine developed with Oxford University.

As of Monday, Argentina had registered 4.6 million cases of COVID-19 and 98,781 related deaths.

Moderna has received emergency authorization for the use of its COVID-19 vaccine in adults from health agencies in more than 50 countries.