Sudden Infant Death Syndrome (SIDS) is a tragic phenomenon characterized by the sudden and unexplained death of an apparently healthy infant, usually during sleep. It is often referred to as "crib death" because it typically occurs when the baby is sleeping in their crib or bassinet. The emoji sequence "👶💤💔" could symbolize the vulnerability of infants during their sleep, the peacefulness associated with slumber, and the heartbreaking nature of SIDS.