Ohio Department of Health's Infectious Disease Reporting Requirements
A Quick Guide to Reportable Disease Classifications in Ohio
CLASS A DISEASES
Diseases of major public health concern because of the severity of disease or potential for epidemic spread.
Reporting Requirement: Report by telephone immediately upon recognition that a case, a suspected case, or a positive laboratory result exists.
Class A Disease Listing
||Rubella (not congenital)
||Severe acute respiratory syndrome (SARS)
|Influenza A - novel virus
||Viral hemorrhagic fever (VHF)
Including Ebola, Lassa Fever, Marburg hemorrhagic fever, and Crimean-Congo hemorrhagic 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 pubic health concern needing timely response because of potential for epidemic spread.
Reporting Requirement: 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.
Class B Disease Listing
|Arboviral neuroinvasive and non-neuroinvasive disease: Eastern equine, LaCrosse virus disease (other California serogroup virus disease), Powassan virus disease, St. Louis encphalitis virus disease, West Nile virus infection, Western equine encephalitis virus disease, Other arthropod-borne disease
||Leprosy (Hansen disease)
Arboviral neuroinvasive and non-neuroinvasive disease (including: Chikungunya virus infection • Eastern equine encephalitis virus disease • LaCrosse virus disease (other California serogroup virus disease) • Powassan virus disease • St. Louis encephalitis virus disease • West Nile virus infection • Western equine encephalitis virus disease • Zika virus infection • Other arthropod-borne diseases)
||Meningitis, aseptic (viral)
|Chlamydia trachomatis infections
||Poliomyelitis (including vaccine-associated cases)
|Creutzfeldt-Jakob disease (CJD)
|E. coli O157:H7 & other enterohemorrhagic (shiga toxin-producing) E. coli
||Spotted Fever Rickettsiosis, including Rocky Mountain spotted fever
||Staphylococcus aureus, with resistance or intermediate resistance to Vancomycin (VRSA, VISA)
|Gonococcal infections (urethritis, cervicitis, pelvic, inflammatory disase, pharyngitis, arthritis, endocarditis, meningitis and neonatal conjunctivitis)
||Streptococcal disease, group A, invasive (IGAS)
|Haemophilus influenzae (invasive disease)
||Streptococcal disease, group B, in newborn
||Streptococcal toxic shock syndrome (STSS)
|Hemolytic uremic syndrome (HUS)
||Streptococcus pneumoniae, invasive disease (ISP)
|Hepatitis B, non-perinatal
|Hepatitis B, perinatal
||Toxic Shock Syndrome (TSS)
|Hepatitis D (delta hepatitis)
||Tuberculosis, including multi-drug resistant tuberculosis (MDR-TB)
|Influenza-associated pediatric mortality
Class C Diseases
Outbreaks, unusual incidence, or epidemics (e.g., histoplasmosis, pediculosis, scabies, staphylococcal infections)
Reporting Requirement: Report an outbreak, unusual incidence, or epidemic by the end of the next business day.
Guidelines & Manuals
CDC STD Guidelines and Recommendations
Ohio Infectious Disease Control Manual (IDCM)
Find general reporting forms and instructions on the Reports page.
For a specific disease-related form, explore our comprehensive Disease page.