Virginia Monthly Morbidity Surveillance Report

The Division of Surveillance and Investigation compiles morbidity reports for all reportable conditions in Virginia. Data are updated on the 15th of each month. Information collected through the Virginia Electronic Disease Surveillance System (VEDSS) flows from local health jurisdictions to the Virginia Department of Health (VDH) and if nationally reportable, to the Centers for Disease Control and Prevention (CDC). These data enable public health agencies to act quickly to prevent the spread of disease and provides an overall snapshot of disease trends at the local, state, and national levels.

This monthly report summarizes the burden and trends for select reportable diseases reported by local health jurisdictions to VDH. It includes information such as the current number of cases vs. the 5-year average; the current number of cases by county and month; the current number of cases by sex, the current number of cases by age group, and trends in case counts throughout the state.

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Please keep the following notes in mind when reviewing these data:

  • Reporting of diseases contained in this report is required by state law (Sections 32.1-36 and 32.1-37 of the Code of Virginia and 12 VAC 5-90-80 and 12 VAC 5-90-90 of the Board of Health Regulations for Disease Reporting and control.
  • Data are based on morbidity assigned to specific health regions and health districts, regardless of where the field investigation may have occurred. Epidemiologic follow-up is not always performed by health department staff in the locality where morbidity is assigned.
  • Month and year correspond to the event date which represents the earliest date among illness onset date, diagnosis date, specimen collection date, date reported to local public health, or the date the investigation was initiated.
  • Data include only those investigations for which notifications have been submitted and approved by VDH Central Office staff as meeting CDC/CSTE case definition criteria.
  • A surveillance case definition is a set of uniform criteria used to define a disease for public health surveillance. Surveillance case definitions enable public health officials to classify and count cases consistently across reporting jurisdictions. Every year, some case definitions are updated which could impact case counts from year to year. This should be considered when interpreting trend of time.
  • Data in these reports should be regarded as preliminary, as additional morbidity reassignments, de-duplication and other data cleaning procedures may occur after report generation. These data are solely intended to provide a snapshot of current activity in Virginia. Although changes may be minimal, please contact the Division of Surveillance and Investigation for official statistics.
  • Graphs or tables appear blank when the number of cases is 0.

As always, your comments and/or suggestions are welcome. Please contact us by email at Epi Comments or by calling 804-864-8141.

For additional surveillance data resources, please visit
for information on HIV, AIDS, sexually transmitted diseases or hepatitis,
or visit for information on tuberculosis.