Atlanta ? Two weeks after Kroger Co. said it was clarifying its policy on stocking the so-called “morning after” pill, activists say dozens of stores continue to block sales of the emergency contraceptive.

Representatives of NARAL Pro-Choice America, an abortion-rights group that also works on other reproductive health issues, sent a letter to Kroger officials Wednesday asking them to carry the drug at all of their pharmacies.

Ted Miller, communications director for the group, said members called 231 Kroger-run pharmacies across the country and found that 21 percent of the stores did not make the drug immediately available.

Reasons ranged from an employee in Kansas who said he would not sell the drug to another in Utah who said it had not been approved for over-the-counter sales in that state, the group said.

A Kroger spokeswoman said that the Cincinnati-based chain does stock the drug at all of its locations and blamed the confusion on employees who did not understand the company’s policies.