Figure 6. Ratio of blood isolates to total isolates of Salmonella by age group of the person from whom the isolate was obtained as reported to the Centers for Disease Control, Atlanta, GA, in 1968-79. From Blaser MJ, Feldman RA. Salmonella bacteremia: reports to the Centers for Disease Control and Prevention, 1968-1979. J Infect Dis 1981;143:743-6.