Consumers should stop using the product immediately.
Fisher-Price is telling parents and guardians to stop using the product immediately and contact Fisher-Price for a refund or voucher.
"We can not put any more children's lives at risk by keeping these risky products on the shelves", Rachel Moon, a doctor with the AAP, said in the statement.
Fisher-Price insisted earlier this month that the Rock 'n Play Sleeper is safe to use, but urged parents to follow the product warnings and instructions.
Fisher-Price and the CPSC did not specify how the infants died, but said the deaths occurred after the babies rolled over from their backs to their stomachs or sides while unrestrained.
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On April 8, Consumer Reports said that many children who died were younger than 3 months of age.
The rocker has been linked to 32 infant deaths.
A previous warning from Fisher-Price said that older babies that were not buckled into the sleeper had rolled over, fallen out of it and been killed.
The recall of the 4.7 million sleepers will affect the United Kingdom because they are available to buy online from the US. Tragically, that is not the case. "All other inclined sleepers should be investigated by the Consumer Product Safety Commission". CPSC has previously warned consumers to use restraints in infant inclined sleep products. The sleepers, a soft cradle that vibrates, are used to put babies to sleep.
The AAP cited a report by U.S. magazine website Consumer Reports, which linked the product to 32 separate infant deaths.