Descriptive statistics of hospitalization related to Salmonella infection in U.S. elderly, 1991--2004. * Hospitalization records with at least one ICD diagnosis code from the "003" category, which indicates "other Salmonella infections". † Based on Census 2000. ‡ Loess curve plotted on uniform scale (span = 7%). Red dash on the left indicates the average of the contiguous U.S. Vertical line at the middles indicates the start of 1997. §Excluding HI & AK.