MMWR Morb Mortal Wkly Rep. 1991 Jul 12;40(27):451-3, 459.
In 1990, state health departments reported 649 cases of Rocky Mountain spotted fever (RMSF) to CDC, a 7.6% increase from the 603 cases reported in 1989. The incidence rate was 0.26 per 100,000 persons. Of the 649 cases, 292 (45.0%) and 101 (15.6%) were reported from the South Atlantic and the West South Central regions, respectively.
1990年，各州卫生部门向疾病控制与预防中心报告了649例落基山斑疹热（RMSF）病例，比1989年报告的603例增加了7.6%。发病率为每10万人0.26例。在这649例病例中，分别有292例（45.0%）和101例（15.6%）来自南大西洋地区和西南中部地区。
