ODH Updates Rules on Communicable Diseases
September 12, 2025
The Ohio Department of Health updates its rules concerning mandatory reporting of certain communicable diseases in Ohio, which will be effective Oct. 1. Reportable communicable diseases fall into three categories:
- Class A – Diseases of major public health concern because of the severity of disease or potential for epidemic spread and must be reported immediately via telephone upon recognition that a case, a suspected case, or a positive laboratory result exists. Examples of Class A disease include (but are not limited to) botulism, measles, and meningococcal disease.
- Class B – Diseases of public health concern needing timely response because of potential for epidemic spread and must be reported by the end of the next business day after the existence of a case, a suspected case, or a positive laboratory result is known. Examples of Class B diseases include (but are not limited to) Candida auris, Lyme disease, and salmonellosis.
- Class C – Report an outbreak, unusual incident, or epidemic of other diseases (e.g. histoplasmosis, pediculosis, scabies, staphylococcal infections) by the end of the next business day. Examples of outbreaks include foodborne, healthcare-associated, and zoonotic.
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