Infectious Diseases StatisticsAs part of the core public health functions, disease data are collected and maintained by the Infectious Diseases Division of the Connecticut Department of Public Health (DPH). It is important to note that surveillance methods may change over time as needed to reflect how the data will be used. These changes can have an impact on the number of cases and incidence of disease over time. The Infectious Diseases Section monitors over 80 reportable diseases, emergency illnesses, and health conditions that are declared reportable by the Commissioner of the DPH. Surveillance is conducted for many infectious diseases including, for example, vector-borne, foodborne, healthcare associated, vaccine preventable, and sexually transmitted illnesses, as well as, HIV, viral hepatitis, and tuberculosis. Collected data are used by the DPH to identify trends, outbreaks, and changes in infectious agents. Aggregate data of reportable diseases over time, can be found below. All documents are in PDF. For other data needs, please contact the appropriate program listed below.
Number of reportable disease cases by county, by year
Number of reportable disease cases by year
Statistics by disease
Information on foodborne outbreaks in Connecticut is available through the National Outbreak Reporting System (NORS).
Information on Foodborne Pathogens Active Surveillance Network (FoodNet) is available through FoodNet Fast.
Both databases are maintained by the Centers for Disease Control and Prevention (CDC) and allow you to search by several different variables.
Infectious Disease Programs and Phone Numbers
Epidemiology and Emerging Infections 860-509-7994
Healthcare Associated Infections 860-509-7995
HIV Surveillance 860-509-7900
Sexually Transmitted Diseases 860-509-7920
TB, HIV, STD and Viral Hepatitis 860-509-7801
For national public health data, please visit the Centers for Disease Control and Prevention website.
This page last updated 01/10/2021.