McHenry County Department of Health
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Communicable Diseases

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Notifiable Conditions Reports

The McHenry County Department of Health (MCDH) Communicable Disease program collects monthly report data on all Illinois Reportable Diseases as defined by the Illinois Department of Public Health (IDPH) (for a complete list of the current Illinois reportable diseases click here). These reports summarize the incident cases of all IDPH notifiable conditions for their respective year. The frequency of incident cases are reported for each month. Incident cases include both probable and confirmed cases (note: 2018 data is provisional).

Illinois Tuberculosis (TB) Case Rates

 West Nile Virus Surveillance

The McHenry County Department of Health (MCDH) conducts West Nile Virus (WNV) surveillance from the beginning of May through the middle of October. Surveillance activities include tracking human cases of WNV in McHenry County (conducted year-round), collection and submission of dead birds for analysis, collection and analysis of Culex mosquitoes for WNV, and remediation of sites that promote mosquito breeding (i.e. dumps, discarded tires, abandoned pools). The following reports summarize the WNV surveillance data for their respective year.