Walmart announced Friday that it expects to deliver up to 13 million doses of the coronavirus vaccine per month “when supply and allocations allow.”

The retailer plans to offer the vaccine every day at its more than 5,000 Walmart and Sam’s Club pharmacies through in-store vaccination clinics and large community events, Dr. Cheryl Pegus, Walmart’s executive vice president of health and wellness, said in a note to customers.

“With 150 million people passing through our doors each week, we’re in a unique position to reach people where they already shop,” Pegus said.

In November, federal health officials reached an agreement with pharmacies across the U.S., including big box stores like Costco and Walmart, to distribute free vaccines after they are approved and become available to the public.

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