McHenry County Department of Health (MCDH) provides comprehensive population, health behavior, and disease surveillance data for residents of McHenry County. This page contains respiratory illness surveillance data and reports only. For other types of data and reports, please click here. For more information on respiratory illness and surveillance, please see the additional links below.

The McHenry County Department of Health (MCDH) tracks respiratory illness in McHenry County including general respiratory illness, COVID-19, influenza, and respiratory syncytial virus (RSV). Respiratory illness surveillance is performed year-round. Reports are updated each week Friday at 4:30 pm with the prior week's data. Presented below is a snapshot of current respiratory trends:

To read the current respiratory illness report, click here.

Additional Links

• Illinois Infectious Respiratory Disease Surveillance Report
• Illinois Influenza Vaccination Coverage Dashboard
• Centers for Disease Control and Prevention Weekly Viral Respiratory Illness Snapshot
• Centers for Disease Control and Prevention Respiratory Illness Webpage
• Centers for Disease Control and Prevention COVID Data Tracker
• Centers for Disease Control and Prevention COVID-19 Webpage
• Centers for Disease Control and Prevention Flu Webpage
• Centers for Disease Control and Prevention RSV Webpage