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Ohio Department of Health's Infectious Disease Reporting Requirements
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Class A Diseases:
Diseases of major public health concern because of the severity of disease or potential for epidemic spread - report by telephone immediately upon recognition that a case, a suspected case, or a positive laboratory result exists
Anthrax Plague
Botulism, foodborne Rabies, human
Cholera Rubella (not congenital)
Diphtheria Severe acute respiratory syndrome (SARS)
Influenza A - novel virus Smallpox
Measles Tularemia
Meningococcal disease Viral hemorrhagic fever (VHF), including Ebola virus disease, Lassa fever, Marburg hemorrhagic fever, and Crimean-Congo hemorrhagic fever
MERS CoV Yellow fever
  Any unexpected pattern of cases, suspected cases, deaths or increased incidence of any other disease of major public health concern, because of the severity of disease or potential for epidemic spread, which may indicate a newly recognized infectious agent, outbreak, epidemic, related public health hazard or act of bioterrorism.
Class B Diseases:
Diseases of public health concern needing timely response because of potential for epidemic spread - report by the end of the next business day after the existence of a case, a suspected case, or a positive laboratory result is known
Amebiasis Leptospirosis

Arboviral neuroinvasive and non-neuroinvasive disease:
• Chikungunya virus infection
• Eastern equine encephalitis virus disease
• LaCrosse virus disease (other California serogroup virus disease)
• Powassan virus disease
• St. Louis encephalitis virus disease
• Zika Virus Infection
• West Nile virus infection
• Western equine encephalitis virus disease
• Other arthropod-borne diseases

Listeriosis
Babesiosis Lyme disease
Botulism, infant Malaria
Botulism, wound Meningitis, aseptic (viral)
Brucellosis Meningitis, bacterial
Campylobacteriosis Mumps
Chancroid Pertussis
Chlamydia infections (urethritis, epididymitis, cervicitis, pelvic inflammatory disease, neonatal conjunctivitis, pneumonia and lymphogranuloma venereum (LGV)) Poliomyelitis (including vaccine-associated cases)
Coccidioidomycosis Psittacosis
Creutzfeldt-Jakob disease (CJD) Q fever
Cryptosporidiosis Rubella (congenital)
Cyclosporiasis Salmonellosis
Dengue Shigellosis
E. coli O157:H7 & other enterohemorrhagic (shiga toxin-producing) E. coli Spotted Fever Rickettsiosis, including Rocky Mountain spotted fever
Ehrlichiosis/Anaplasmosis Staphylococcus aureus, with resistance or intermediate resistance to Vancomycin (VRSA, VISA)
Giardiasis Streptococcal disease, group A, invasive (IGAS)
Gonococcal infections (urethritis, cervicitis, pelvic, inflammatory disase, pharyngitis, arthritis, endocarditis, meningitis and neonatal conjunctivitis) Streptococcal disease, group B, in newborn
Haemophilus influenzae (invasive disease) Streptococcal toxic shock syndrome (STSS)
Hantavirus Streptococcus pneumoniae, invasive disease (ISP)
Hemolytic uremic syndrome (HUS) Syphilis
Hepatitis A Tetanus
Hepatitis B, non-perinatal Toxic Shock Syndrome (TSS)
Hepatitis B, perinatal Trichinosis
Hepatitis C Tuberculosis, including multi-drug resistant tuberculosis (MDR-TB)
Hepatitis D (delta hepatitis) Typhoid fever
Hepatitis E Varicella
Influenza-associated hospitalization Vibriosis
Influenza-associated pediatric mortality Yersiniosis
Legionnaires' disease  
Leprosy (Hansen disease)  
Class C Diseases:
Report an outbreak, unusual incidence, or epidemic (e.g., histoplasmosis, pediculosis, scabies, staphylococcal infections) by the end of the next business day
Outbreaks:
Community Healthcare-associated Waterborne
Foodborne Institutional Zoonotic

item blockGuidelines & Manuals

CDC STD Guidelines and Recommendations
CDC Guidelines for Disinfection of Day Care Facilities
Infectious Disease Manual for Columbus & Franklin County Schools
Ohio Infectious Disease Control Manual (IDCM)
Preventing the Spread of Infection from Diarrhea

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Find general reporting forms and instructions on the Reports page.
For a specific disease-related form, explore our comprehensive Disease page.