Infectious Diseases Statistics
The Infectious Diseases Branch conducts surveillance for more than 80 diseases and conditions including vector-borne, foodborne, healthcare-associated, vaccine-preventable, and sexually transmitted infections, as well as HIV, viral hepatitis, and tuberculosis. DPH uses surveillance data to detect outbreaks and emerging threats, monitor trends over time, evaluate public health interventions, identify at-risk populations, and inform public health partners and the public.
For additional data, please contact the programs listed below directly.
Current Year (2024)
Previous Years (Archive)
CDC Outbreak Data
National Outbreak Reporting System (NORS) Reports.
CDC NORS collects reports of enteric disease outbreaks caused by bacterial, viral, parasitic, chemical, toxin, and unknown agents, as well as foodborne and waterborne outbreaks of non-enteric disease. NORS also collects reports of certain fungal disease outbreaks.
Bacteria, Enterics, Ameba, and Mycotics (BEAM) Dashboard.
The BEAM Dashboard is an interactive tool to access and visualize data that track enteric bacterial, viral, and parasitic agents, and other foodborne, waterborne, and fungal diseases.
Foodborne Diseases Active Surveillance Network (FoodNet).
FoodNet conducts surveillance for Campylobacter, Cyclospora, Listeria, Salmonella, Shiga toxin-producing E. coli (STEC), Shigella, Vibrio, and Yersinia infections diagnosed by laboratory testing of samples from patients. FoodNet is a collaborative program among CDC, FDA, USDA, and 10 state health departments including Connecticut.
Infectious Diseases Branch Programs
Epidemiology and Emerging Infections (860) 509-7994
Healthcare Associated Infections (860) 509-7995
HIV/Hepatitis C Surveillance (860) 509-7900
Immunizations (860) 509-7929
Respiratory Viral Diseases (860) 509-7994
Sexually Transmitted Diseases (860) 509-7920
Other Infectious Diseases (860) 509-7920
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Updated 10/21/2025