How many total cases of rocky mountain spotted fever has there been?

As of my last update in October 2023, the total number of reported cases of Rocky Mountain spotted fever (RMSF) in the United States varies annually but typically ranges from about 2,000 to 3,000 cases each year. Since RMSF was first identified in the late 1800s, thousands of cases have been documented, but exact cumulative totals are challenging to determine due to variations in reporting and diagnosis. For the most current statistics, it's advisable to consult the Centers for Disease Control and Prevention (CDC) or other public health resources.