
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 a PD-23 within 12 hours.
3. Report to the local Director of Health in town of patient residence.
4. Diseases with specialized reporting forms are asterisked (*).
Category 1 Diseases
Acute HIV Infection | Poliomyelitis |
Anthrax | Q fever |
Botulism | Rabies |
Brucellosis | Ricin poisoning |
Cholera | Severe Acute Respiratory Syndrome (SARS) |
Diphtheria | Smallpox |
Measles | Staphylococcal enterotoxin B pulmonary poisoning |
Melioidosis | Staphylococcus aureus disease, reduced or resistant susceptibility to vancomycin |
Meningococcal disease | Syphilis, congenital |
Outbreaks | Tuberculosis |
◦ foodborne (involving ≥ 2 persons) | Tularemia |
◦ institutional | Venezuelan equine encephalitis virus infection |
◦ unusual disease or illness | Viral hemorrhagic fever |
Plague | Yellow fever |
Category 2 Disease Reporting
1. Complete and submit a PD-23 within 12 hours.
2. Hospital IPs entering cases in CTEDSS satisfies the reporting requirement.
3. Diseases with specialized reporting forms are asterisked (*).
Category 2 Diseases
Acquired Immunodeficiency Syndrome | Histoplasmosis |
Acute flaccid myelitis | HIV-1/HIV-2 infection |
Anaplasmosis | HPV: biopsy proven CIN 2, CIN 3, or AIS or their equivalent |
Babesiosis | Influenza-associated death |
Blastomycosis | Influenza-associated hospitalization |
Blood lead ≥ 3.5μg/dL in pregnant persons | Legionellosis |
Borrelia miyamotoi disease | Listeriosis |
California group arbovirus infection | Malaria |
Campylobacteriosis | Mercury poisoning |
Candida auris | Mpox |
Chancroid | Multisystem inflammatory syndrome in children (MIS-C) |
Chickenpox (Varicella) | Mumps |
Chickenpox-related death | Neonatal bacterial sepsis |
Chikungunya | Occupational asthma |
Chlamydia (C. trachomatis) (all sites) | Oropouche virus infection |
COVID-19 death | Pertussis |
COVID-19 hospitalization | Pneumococcal disease, invasive |
Cronobacter in infants (<1 year) | Powassan virus infection |
Cryptosporidiosis | Respiratory Syncytial Virus (RSV) associated death |
Cyclosporiasis | RSV-associated hospitalization |
Dengue | Rubella (including congenital) |
E-cigarette or vaping product use associated lung injury (EVALI) | Salmonellosis |
Eastern equine encephalitis virus infection | Shiga toxin-related diseases (gasteroenteritis) |
Ehrlichia chaffeensis infection | Shigellosis |
Escherichia coli O157:H7 infection | Silicosis |
Escherichia coli, invasive, in infants (<1 year) | Spotted fever rickettsiosis |
Gonorrhea* | St. Louis encephalitis virus infection |
Group A Streptococcal disease, invasive | Syphilis* |
Group B Streptococcal disease, invasive | Tetanus |
Haemophilus influenzae disease, invasive | Trichinosis |
Hansen’s disease (Leprosy) | Typhoid fever |
Healthcare-associated infections | Vaccinia disease |
Hemolytic-uremic syndrome | Vibrio infection (V. parahaemolyticus, V. vulnificus, others) |
Hepatitis A | West Nile virus infection |
Hepatitis B | Zika virus infection |
◦ acute infection | |
◦ HBsAg positive pregnant women | |
Hepatitis C | |
◦ acute infection | |
◦ perinatal infection | |
◦ positive rapid antibody test result |
PD-23 Footnotes
- Report only to DPH.
- As described in the CDC case definition.
- Individual cases of “signicant unusual illness” are also reportable.
- Fax PD-23 to (959) 200-4751.
- Invasive disease: from sterile fluid (blood, CSF, pericardial, pleural, peritoneal, joint, or vitreous), bone, internal body sites, or other normally sterile site, including muscle.
- 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.
- 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.
- 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
Vaping Lung Injury Case Report (860) 706-1262
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Last updated: 1/30/2025