City of Northlake issued the following announcement on March 12.
I want to assure you that the Cook County Department of Public Health and the Cook County Department of Emergency Management and Regional Security are working closely with the Centers for Disease Control and Prevention (CDC) as well as local public health agencies as we closely monitor and work to prevent the spread of the Novel Coronavirus (COVID-19).
For additional up-to-date information, visit:
Chicago:
City’s Department of Public Health: https://chicago.gov/coronavirus
Counties:
Cook: https://www.cookcountyil.gov/service/letter-president-regarding-coronavirus
DeKalb: https://health.dekalbcounty.org/coronavirus/
Du Page: https://www.dupagehealth.org/590/Coronavirus-Disease-2019-COVID-19-Inform
Kane: http://www.kanehealth.com/
Kendall: http://www.kendallhealth.org/news/coronavirus-disease-covid-19-advice-for-the-public/
Lake: https://www.lakecountyil.gov/4377/Coronavirus-Disease-2019-COVID-19
Will: Refers people to Illinois Department of Public Health website (see below)
Winnebago: http://www.wchd.org/index.php?option=com_content&view=article&id=749&Itemid=1336
State:
Illinois Department of Public Health: http://www.dph.illinois.gov/topics-services/diseases-and-conditions/diseases-a-z-list/coronavirus
Federal:
Center for Disease Control: https://www.cdc.gov/coronavirus/2019-ncov/index.html
International:
World Health Organization: https://www.who.int/emergencies/diseases/novel-coronavirus-2019/advice-for-public
Original source can be found here.