is not only more prevalent by more than 50 percent Illinois Department of Public Health reports about 2,500 infants about 2,500 infants about 2,500 infants SIDS rates peak between 2-4 months Sudden Infant Death Syndrome (SIDS) about 2,500 infants about 2,500 infants about 2,500 infants http://www.idph.state.il.us/sids/sids_factsheet.htm