Epidemiology is the study of how often diseases occur in different groups of people and why.

Epidemiological information makes up many of the pieces that need to be gathered to address HIV.  The epidemiology of HIV in Vermont is used to plan and evaluate strategies to prevent illness and as a guide to the management of disease that has already developed.

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An epidemiologic profile provides a comprehensive description of a specific population in a specific location, related to a specific disease. A state may have an epidemiological profile related to any number of diseases/health conditions. The HIV Epidemiological Profiles linked here present data on Vermont's experience of HIV: prevalence and incidence, the Continuum of Care, rate of viral suppression, five-year trends and comparisons between populations, among other data.  

HIV profiles are completed every five years, and provide an essential body of data for the Integrated HIV Prevention and Care Plan. State HIV profiles are compiled to the specifications of the Epidemiological Profile Guidance from the CDC and HRSA, that provides core questions for states to answer. This Guidance was updated in 2022, so there are some differences between the questions asked and answered in the 2023 Profile versus the 2018 Profile.