Provider Reportable Diseases

Category 1 Disease Reporting

1. Report to DPH by phone on the day of diagnosis or suspicion.

  • Business hours: (860) 509-7994
  • Evenings, weekends, holidays: (860) 509-8000

2. Complete and submit PD-23 case report within 12 hours. Diseases with specialized reporting forms are asterisked (*) in the disease list below.

3. Report to the local Director of Health in town of patient residence. 

Category 1 Diseases

Category 2 Disease Reporting

1. Complete and submit a PD-23 case report within 12 hours. Fax: (860) 629-6962 

2. Hospital IPs entering cases in CTEDSS (when applicable) satisfies the reporting requirement.

3. Diseases with specialized reporting forms are asterisked (*).

Category 2 Diseases

PD-23 Footnotes

  1. Report only to DPH.
  2. As described in the CDC case definition.
  3. Individual cases of “significant unusual illness” are also reportable.
  4. Fax PD-23 to (959) 200-4751.
  5. Invasive disease: from sterile fluid (blood, CSF, pericardial, pleural, peritoneal, joint, or vitreous), bone, internal body sites, or other normally sterile
    site, including muscle.
  6. Report Healthcare Associated Infections (HAIs) as required by Conn. Gen. Stat. §§ 19a-490o and 19a-215. Detailed instructions on the types of HAIs, facility types, locations and methods of reporting are available on the DPH website.
  7. On request from the DPH and if adequate serum is available, send serum from patients with HUS to the State Public Health Laboratory for antibody testing.
  8. Clinical sepsis and blood or CSF isolate obtained from an infant <3 days of age.

Specialized Reporting Forms & Fax Numbers

Chickenpox (Varicella) Report (860) 707-1905

HIV Case Report Form (860) 509-8237

Occupational Diseases Report (860) 730-8424

Sexually Transmitted Diseases (860) 730-8380

Tuberculosis Report Form (860) 730-8271


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Updated 1/13/2026