Disease Reporting

Wisconsin has communicable disease reporting requirements, P-02566 (PDF), that support public health’s responsibilities to control the incidence and spread of communicable diseases in our state.

The diseases and conditions listed on this page are considered to have significant public health impact, and any confirmed or suspected cases must be reported promptly.

Requirements for the timing of reporting, once the disease or condition is recognized or suspected, vary by disease. In addition to the information listed below, general reporting requirements are described in Wis. Stat. ch. 252 Communicable Diseases. The specific reporting requirements are described in Wis. Admin Code. ch. DHS 145 Control of Communicable Diseases. A list of reportable conditions is provided in Wis. Admin Code. ch. DHS 145 - Appendix A.

Questions concerning this information may be directed to: Bureau of Communicable Diseases, 608-267-9003, or the Bureau of Environmental and Occupational Health, 608-266-1120.

Health Alert Network (HAN)

The HAN enables public health staff, Tribal nations, health care providers, emergency workers, and others to exchange reliable information as outbreaks evolve. Access the HAN webpage to read messages that have gone out in response to the COVID-19 pandemic and other emerging health issues.

Case reporting methods and contact information

Category I diseases must be reported IMMEDIATELY by telephone to the patient's local health officer, or their designee, unless otherwise instructed by the state epidemiologist for specific reportable diseases. Category II diseases must be reported within 72 hours either electronically through the Wisconsin Electronic Disease Surveillance System (WEDSS), by mail or fax using an Acute and Communicable Disease Case Report, F-44151 or STD Case Report Form, F-44243, or by other means. HIV/AIDS should be reported directly to the Wisconsin HIV Program.

Communicable diseases and other notifiable conditions

The following diseases are of urgent public health importance and must be reported IMMEDIATELY by telephone to the patient's local health officer, or their designee, unless otherwise instructed by the state epidemiologist for specific reportable diseases. In addition to the immediate report, within 24 hours, complete and fax, mail, or submit a case report electronically through the Wisconsin Electronic Disease Surveillance System (WEDSS), or by other means. Public health intervention is expected as indicated. See Wis. Admin Code. § DHS 145.04(3)(a) and Wis. Stat. § 252.05.

Category I Diseases
Category I DiseaseCase Reporting and Investigation Protocol (EpiNet)Notes
AnthraxAnthrax, P-01893 (PDF)1, 4, 5
Botulism (Clostridium Botulinum) including foodborne, infant, wound, and other

Botulism Non-infant, P-01937 (PDF)

Botulism Infant Intestinal, P-01938 (PDF)

1, 2, 4, 5
Carbapenemase-producing carbapenem-resistant Enterobacterales (CP-CRE) As of April 25, 2022, this is a Category II diseaseCarbapenemase-Producing Organisms, P-02187 (PDF)1, 2, 7
Cholera (Vibrio cholera)Cholera (Vibrio cholerare 01/01390), P-01875 (PDF)1, 3, 4
Diphtheria (Corynebacterium diphtheria)Diphtheria, P-01985 (PDF)1, 3, 4, 5
Haemophilus influenzae invasive disease including epiglottitisHaemophilus influenzae, P-01976 (PDF)1, 2, 3, 5
Hantavirus infectionHantavirus, P-01903 (PDF)1, 2, 4
Hepatitis AHepatitis A, P-01915 (PDF)1, 2, 3, 4, 5
Measles (rubeola)Measles, P-01989 (PDF)1, 2, 3, 4, 5
Meningococcal disease (Neisseria meningitidis)Meningococcal disease, P-01975 (PDF)1, 2, 3, 4, 5
Middle Eastern Respiratory Syndrome-associated Coronavirus (MERS-CoV)N/A2, 3, 4
Mpox (Monkeypox virus)N/A1, 2, 3, 4, 5, 6
Pertussis whooping cough caused by any Bordetella infection. As of October 31, 2024, reporting requirements were changed.Currently under revision1, 2, 3, 4, 5, 7
Plague (Yersinia pestis)Plague, P-01918 (PDF)1, 4, 5
Polio virus infection paralytic or nonparalyticPolio virus infection, P-01977 (PDF)1, 4, 5
Primary Amebic Meningoencephalitis (PAM) Naegleria fowleriPAM, P-02191 (PDF)2, 4, 5, 6
Rabies human and animalRabies, P-01901 (PDF)1, 4, 5
Ricin toxinRicin poisoning, P-01923 (PDF)4, 5
RubellaRubella, P-01978 (PDF)1, 2, 4, 5
Rubella congenital syndromeRubella, P-01978 (PDF)1, 2, 5
Severe Acute Respiratory Syndrome-associated Coronavirus (SARS-CoV)SARS, P-01993 (PDF)1, 2, 3, 4
SmallpoxSmallpox, P-01879 (PDF)4, 5
TuberculosisActive Tuberculosis, P-01928 (PDF)1, 2, 3, 4, 5
Vancomycin-intermediate Staphylococcus aureus (VISA) and Vancomycin-resistant Staphylococcus aureus (VRSA) infection. As of September 22, 2023, this is a reportable category II disease.VISA-VRSA, P-01862 (PDF)1, 4, 5, 7
Viral Hemorrhagic Fever (VHF) including Crimean-Congo, Ebola, Lassa Lujo, and Marburg viruses, and New World ArenavirusesN/A1, 2, 3, 4
Yellow feverYellow Fever, P-01929 (PDF)1, 4

Outbreaks, confirmed or suspected:

Foodborne or waterborne outbreaks
Occupationally related diseases
Other acute illnesses

N/A1, 3, 4, 6
6
3, 4, 6
Any detection of, or illness caused by, an agent that is foreign, exotic or unusual to Wisconsin, and that has public health implicationsN/A4

Notes key

  1. Infectious disease or other condition designated as notifiable at the national level.
  2. Required Wisconsin or CDC follow-up form completed by public health agency.
  3. High-risk assessment by local health department is needed to determine if patient or member of patient's household is employed in food handling, daycare or health care.
  4. Source investigation by local or state health department is needed.
  5. Immediate treatment is recommended, i.e., antibiotic or biologic for the patient or contact or both.
  6. Coordination between local and state health departments is recommended for follow-up.
  7. Disease declared reportable by State Epidemiologist memo. Disease specific memos are linked from numeral seven in the Notes column above.

The following diseases shall be reported to the patient's local health officer, or the local health officer's designee, either electronically through the Wisconsin Electronic Disease Surveillance System (WEDSS), by mail or fax using an Acute and Communicable Disease Case Report, F-44151, or by other means within 72 hours upon recognition of a case or suspected case, unless otherwise indicated. Public health intervention is expected as indicated. See Wis. Admin Code. § DHS 145.04(3)(b) and Wis. Stat. § 252.05.

The sexually transmitted diseases shall be reported to the local health officer within 72 hours on a Sexually Transmitted Diseases Laboratory and Morbidity Epidemiologic Case Report, F-44243 (Word fillable) or by entering the data into the WEDSS or by other means within 72 hours of the identification of a case or suspected case. Public health intervention is expected as indicated. See Wis. Admin Code § DHS 145.15 and Wis. Stat. § 252.11(7)(b).

Category II Diseases
Category II DiseaseCase Reporting and Investigation Protocol (EpiNet)Notes
AnaplasmosisAnaplasmosis, P-01951 (PDF)1, 2, 5
Arboviral disease including, but not limited to, disease caused by California serogroup, Chikungunya, Dengue, Eastern Equine Encephalitis, Powassan, St. Louis Encephalitis, West Nile, Western Equine Encephalitis, and Zika virusesArboviral Infection, P-01930 (PDF)1, 2, 4
BabesiosisBabesiosis, P-01886 (PDF)1 ,2, 4, 5
BlastomycosisBlastomycosis, P-01924 (PDF)2
Borreliosis other than Lyme disease which is reportable as a distinct diseaseBorreliosis, P-02215 (PDF)2, 4, 6
BrucellosisBrucellosis, P-01902 (PDF)1, 2, 4
Campylobacteriosis (Campylobacter infection)Campylobacteriosis, P-01115 (PDF)1, 2, 3, 4
Candida auris clinical illness, colonizationCandida auris, P-03234 (PDF)1, 2, 6, 7
Carbapenemase-producing carbapenem-resistant Acinetobacter baumannii (CP-CRAB)Carbapenemase-Producing Organisms, P-02187 (PDF)2, 6, 7
Carbapenemase-producing carbapenem-resistant Pseudomonas aeruginosa (CP-CRPA)Carbapenemase-Producing Organisms, P-02187 (PDF)2, 6, 7
Carbapenemase-producing carbapenem-resistant Enterobacterales (CP-CRE) As of April 25, 2022, this is a Category II diseaseCarbapenemase-Producing Organisms, P-02187 (PDF)1, 2, 6, 7
Chancroid (Haemophilus ducreyi)Chancroid, P-01973 (PDF)1, 2
Chlamydia trachomatis infectionChlamydia, P-01971 (PDF)1, 2, 4, 5
Coccidioidomycosis (Valley Fever)Coccidioidomycosis, P-02185 (PDF)1, 2, 4
COVID-19-associated hospitalization. As of Nov. 1, 2023, this is a category II disease.COVID-19-associated Hospitalizations, P-03517 (PDF)1, 2, 7
COVID-19-associated pediatric death. As of Nov. 1, 2023, this is a category II disease.COVID-19-associated Pediatric Mortality, P-03518 (PDF)1, 2, 4, 6, 7
Cryptosporidiosis (Cryptosporidium infection)Cryptosporidiosis, P-01187 (PDF)1, 2, 3, 4
Cronobacter, Invasive Infection-InfantCronobacter, Invasive Infection- Infant, P-03586 (PDF)1, 2, 6, 7
Cyclosporiasis (Cyclospora infection)Cyclosporiasis, P-01883 (PDF)1, 2
EhrlichiosisEhrlichiosis, P-02228 (PDF)1, 2, 5
Environmental and occupational lung diseases:
Asbestosis
Silicosis
Chemical pneumonitis
Occupational lung diseases caused by bio-dusts and bio-aerosols

Asbestosis, P-02193 (PDF)

Silicosis, P-02190 (PDF)

Chemical Pneumonitis, P-02189 (PDF)

Occupational lung diseases from bio-dusts and bio-aerosols, P-02188 (PDF)

6
1, 6
6
6
E. coli infection caused by Shiga toxin-producing E. coli (STEC)Shiga Toxin-Producing E. coli (STEC), P-01882 (PDF)1, 2, 3, 4
E. coli infection caused by enteropathogenic (EPEC), enteroinvasive (EIEC), or enterotoxigenic E. coli (ETEC)

Enteropathogenic E. coli (EPEC), P-01880 (PDF)

Enteroinvasive E. coli (EIEC), P-01116 (PDF)

Enterotoxigenic E. coli (ETEC), P-01823 (PDF)

2, 3, 4
Free-living amebae infection including Acanthamoeba disease (including keratitis) and Balamuthia mandrillaris diseaseFree-Living Amebae Infections, P-02253 (PDF)2, 4
GiardiasisGiardia, P-01990 (PDF)1, 2, 3, 4
Gonorrhea (Neisseria gonorrhoeae)Gonorrhea, P-01970 (PDF)1, 2, 4, 5
Hemolytic uremic syndromeHemolytic uremic syndrome (HUS), P-01934 (PDF)1, 2, 3, 4
Hepatitis BHepatitis B, P-01872 (PDF)1, 2, 3, 4, 5
Hepatitis CHepatitis C, P-02039 (PDF)1, 2
Hepatitis DHepatitis D, P-02048 (PDF)2, 3, 4
Hepatitis EHepatitis E, P-01916 (PDF)N/A
HistoplasmosisHistoplasmosis, P-01914 (PDF)2
Influenza-associated hospitalizationInfluenza-Associated Hospitalizations, P-01873 (PDF)2
Influenza-associated pediatric deathInfluenza-Associated Pediatric Death, P-01878 (PDF)1, 2, 4
Influenza A virus infection, novel subtypesInfluenza A, Novel Subtypes, P-01877 (PDF)1, 2
Kawasaki diseaseKawasaki, P-01874 (PDF)2
Latent Tuberculosis infection (LTBI)Latent Tuberculosis, P-02303 (PDF)2, 5
LegionellosisLegionellosis, P-01895 (PDF)1, 2, 4, 5
Leprosy (Hansen's disease)Leprosy, P-01925 (PDF)1, 2, 3, 4, 5
LeptospirosisLeptospirosis, P-01917 (PDF)1, 2, 4
ListeriosisListeriosis, P-01687 (PDF)1, 2, 4
Lyme diseaseLyme Disease, P-01735 (PDF)1, 2
Lymphocytic choriomeningitis virus (LCMV) infectionLCMV, P-01919 (PDF)4
Malaria (Plasmodium infection)Malaria, P-01931 (PDF)1, 2, 4, 5
Meningitis, bacterial (other than Haemophilus influenzae, meningococcal or streptococcal, which are reportable as distinct diseases)Bacterial Meningitis (Nonmeningococcal, non-Haemophilus influenzae), P-01981 (PDF)2
MumpsMumps, P-01969 (PDF)1, 2, 4, 5
Mycobacterial disease (nontuberculous)Atypical mycobacteria, non-tuberculous, P-01932 (PDF)N/A
Pelvic inflammatory diseasePelvic Inflammatory Disease (PID), P-01974 (PDF)2
PsittacosisPsittacosis, P-01910 (PDF)1, 2, 4
Q Fever (Coxiella burnetii)Q Fever, P-01920 (PDF)1, 2
Respiratory Syncytial Virus (RSV)-associated hospitalization. As of Nov. 1, 2023, this a Category II disease.Respiratory Syncytial Virus (RSV)-Associated Hospitalizations, P-03519 (PDF)2, 7
Respiratory Syncytial Virus (RSV)-associated pediatric death. As of Nov. 1, 2023, this a Category II disease.Respiratory Syncytial Virus (RSV)-associated pediatric death, P-03520 (PDF)2, 4, 6, 7
Rheumatic fever newly diagnosed and meeting the Jones criteriaRheumatic fever, P-01987 (PDF)5
Rickettsiosis other than spotted fever rickettsiosis, which is reportable as a distinct diseaseTyphus Fever Group Rickettsiosis, P-02251 (PDF)2, 4, 6
SalmonellosisSalmonellosis (Nontyphoidal), P-01050 (PDF)1, 2, 3, 4
Shigellosis (Shigella infection)Shigellosis, P-01116 (PDF)1, 2, 3, 4
Spotted Fever Rickettsiosis including Rocky Mountain spotted feverSpotted Fever Rickettsiosis, P-01949 (PDF)1, 2, 4, 5
Streptococcal disease
All invasive disease caused by Groups A and B Streptococci

Group A Streptococcal infections, P-01982 (PDF)

Group B Streptococcal infections, P-01983 (PDF)

N/A
Streptococcus pneumoniae invasive disease invasive pneumococcalStreptococcus pneumoniae, P-01890 (PDF)1
Syphilis (Treponema pallidum)Syphilis, P-01972 (PDF)1, 2, 4, 5, 6
TetanusTetanus, P-01979 (PDF)1, 2, 5
Toxic shock syndromeToxic shock syndrome. P-01940 (PDF)1, 2
Toxic substance related diseases:
Blue-green algae (Cyanobacteria) and Cyanotoxin poisoning
Carbon monoxide poisoning
Infant methemoglobinemia
Lead (Pb) poisoning in children and adults**
Metal poisonings other than lead (Pb)
Pesticide poisonings

Blue-Green Algae (Cyanobacteria) and Cyanotoxin Poisoning, P-02198​ (PDF)

Carbon Monoxide (CO) Poisoning, P-02192 (PDF)

Infant methemoglobinemia, P-02619 (PDF)

2, 4, 6
1, 6
6
1, 6
6
1, 6
ToxoplasmosisToxoplasmosis, P-01884 (PDF)N/A
Transmissible spongiform encephalopathy (Creutzfeldt-Jakob Disease (CJD), human TSE)TSE, CJD, P-01913 (PDF)N/A
TrichinosisTrichinosis, P-01912 (PDF)1, 2, 4
Tularemia (Francisella tularensis)Tularemia, P-01911 (PDF)1, 2, 4, 5
Typhoid fever (Salmonella Typhi)Typhoid fever, P-01935 (PDF)1, 2, 3, 4
Varicella (chickenpox)Varicella, P-01980 (PDF)1, 3, 5
Vibriosis (non-cholera Vibrio infection)Vibriosis (non-cholera Vibrio infection), P-01891 (PDF)1, 2, 3, 4
Vancomycin-intermediate Staphylococcus aureus (VISA) and Vancomycin-resistant Staphylococcus aureus (VRSA) infection. As of September 22, 2023, this is a reportable category II disease.VISA-VRSA, P-01862 (PDF)1, 4, 5, 7
YersiniosisYersiniosis, P-01881 (PDF)2, 3, 4
Zika virus infectionZika virus infection, P-02066 (PDF)1, 2

Notes key

  1. Infectious disease or other condition designated as notifiable at the national level.
  2. Required Wisconsin or CDC follow-up form completed by public health agency.
  3. High-risk assessment by local health department is needed to determine if patient or member of patient's household is employed in food handling, daycare or health care.
  4. Source investigation by local or state health department is needed.
  5. Immediate treatment is recommended, i.e., antibiotic or biologic for the patient or contact or both.
  6. Coordination between local and state health departments is recommended for follow-up.
  7. Disease declared reportable by State Epidemiologist memo. Disease specific memos are linked from numeral seven in the Notes column above.

**Refer to Wis. Admin. Code § DHS 181.05 for more stringent reporting timelines of blood lead tests.

The following disease shall be reported to the state epidemiologist on a Wisconsin HIV Case Report Form, F-44338 (Word and PDF), electronically through the Wisconsin Electronic Disease Surveillance System (WEDSS), by fax, telephone, or mail within 72 hours after identification of a known or suspected case. Additionally, the following laboratory results shall be reported on all persons newly or previously diagnosed with HIV infection each time the test is conducted: all CD4+ test results (CD4+ T-lymphocyte counts and percentages), both detectable and undetectable HIV viral load results, HIV genotypic genotype results and all components of the HIV laboratory diagnostic testing algorithm when the initial screening test is reactive. See Wis. Stat. § 252.15(7)(b) and Wis. Admin. Code § DHS 145.04(3)(b)

Additional information about HIV reporting and testing algorithm

For questions, contact the HIV Program’s Surveillance Unit, DHSHIVsurveillance@dhs.wisconsin.gov

Category III Disease
Category III HIV/AIDSCase Reporting and Investigation Protocol (EpiNet)Notes
Human immunodeficiency virus (HIV) infection AIDS has been reclassified as HIV Stage IIIHuman Immunodeficiency Virus (HIV), P-01988 (PDF)1, 2, 4

Notes key

  1. Infectious disease or other condition designated as notifiable at the national level.
  2. Required Wisconsin or CDC follow-up form completed by public health agency.
  3. High-risk assessment by local health department is needed to determine if patient or member of patient's household is employed in food handling, daycare or health care.
  4. Source investigation by local or state health department is needed.
  5. Immediate treatment is recommended, i.e., antibiotic or biologic for the patient or contact or both.
  6. Coordination between local and state health departments is recommended for follow-up.

Listing of Wisconsin Local Health Officers

Register to report electronically through WEDSS
(Note: 75% of disease reports are now received through WEDSS)

Bureau of Communicable Diseases
Phone: 608-267-9003

Bureau of Environmental and Occupational Health
Phone: 608-266-1120

Secure fax numbers

HIV Program
608-720-1288

BEOH
608-267-4853

Epidemiology Program
608-261-4976

Immunization Program
608-267-9493

STD Program
608-261-9301

TB Program
608-266-0049

Copies may be mailed to:

Wisconsin State Epidemiologist (Communicable Diseases)
Bureau of Communicable Diseases
Specify Disease or Program
1 W Wilson St., Room 272
Madison, WI 53703

or

Wisconsin State Epidemiologist (Environmental and Occupational Health)
BEOH
1 W Wilson St., Room 150
Madison, WI 53703

​​Frequently used paper report forms

Acute and Communicable Disease Case Report form, F-44151
STD: F-44243
HIV: F-44338
LTBI: F-02265 (PDF)

Additional resources

Glossary

 
Last revised December 19, 2024