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Show Chlamydia (Cases in 1993 in Utah = 1,589) Chlamydia infection is the most common of all bacterial sexually transmitted diseases. From 1988 through 1991 the UtahiU.S. ratio showed a Utah rate approximately one-third of the national rate. However, in 1992 the Utah rate increased to about one-half of the U.S. rate. This ratio stayed approximately the same for the next two years, possibly reflecting increased efforts in sexually transmitted disease screening, reporting, and recognition of asymptomatic infection. Since then, Utah's rate and ratio to the national rate has shown a slow decline. Women have a higher reported incidence than do men. This may represent poor reporting of infected males and increased screening of females. The UtahiU.S. ratio for females is slightly less than half of the national figure. The male UtahiU.S. ratio has been about 1:1, suggesting that reporting of male cases is low for the nation and not just for Utah. Table 66. Chlamydia* Year Utah U.S. UtahiU.S. 1988 30.7 81.8 0.38:1 1989 40.6 97.2 0.42:1 1990 42.3 145.4 0.29:1 1991 42.5 163.1 0.26:1 1992 89.5 178.3 0.50:1 1993 88.2 167.9 0.53:1 1994 100 188.4 0.53:1 1995 85.9 190.4 0.45:1 1996 81.9 194.5 0.42:1 Table 67. Chlamydia by Gender* Male Female Year Utah U. S. Utah U.S. 1988 16.3 32.6 44.9 133.5 1989 29.3 29.4 51.7 163.2 1990 29.8 36.8 54.6 210.0 1991 27.1 40.6 57.7 233.7 1992 47.3 42.8 131.2 263.9 1993 39.8 42.5 136.0 243.9 ?Incidence rates per 100,000 population. Tables 66 and 67. Sources: Utah and U.S. 1994-1996: US Department of Health and Human Services. Sexually Transmitted Disease Surveillance. Figure 40 Chlamydia by Gender 300 -r Incidence Rates 200 per 100,000 100 - 0 1988 Population 1990 1992 Utah Male U.S.Male Utah Female U.S. Female 109 |