Greendale Communicable Disease Control

Communicable Disease Control

Wisconsin Outbreaks
For information on outbreaks and Investigations visit:

U.S.-Based Outbreaks

Recent investigations reported on


International Outbreaks



 International Travel  

Please see the Travelers’ Health site for a complete list. 
Travel notices are designed to inform travelers and clinicians about current health issues related to specific international destinations. These issues may arise from disease outbreaks, special events or gatherings, and natural disasters that may affect travelers’ health. 

For country-specific information about Safety and Security, visit the US Department of State Travel Advisories page.

For country-specific information about weather conditions, visit the National Oceanic and Atmospheric Administration (NOAA) International Weather Selector webpage.

For a list of all Zika virus travel notices by region, visit Zika travel information.


                                                         Types Travel of Notices

Warning Level 3, Avoid Nonessential Travel to this destination. High risk to travelers, no precaution available to protect against the identified increased risk.

Alert Level 2, Practice Enhanced Precautions for this destination. Travel Notice describes additional precautions added, or defines a specific at-risk population, to protect against this identified increased risk.

Watch Level 1, Practice Usual Precautions-Reminder to follow usual precautions for this destination, as described in the Travel Notice and/or on CDC’s Travelers’ Health website. Usual precautions, may include being up to date on all recommended   vaccines and practicing appropriate mosquito avoidance. Usual precautions are  best possible protection against the identified increased risk.    

Travel Notices Affecting International Travelers

Please see the Travelers’ Health site for a complete list. 







Wisconsin State Law requires the reporting of communicable diseases to the local Health Department. Report notifiable conditions to 414-423-2110.  Communicable disease can be reported by individuals, laboratories, or health care professionals. The law requires that public health nurses provide surveillance and investigation to prevent and control the spread of disease. Requirements for the timing of reporting, once the disease or condition is recognized or suspected, vary by disease. General reporting requirements are described in Wisconsin Statute Chapter 252, Communicable Diseases. The specific reporting requirements are described in Chapter DHS 145, Control of Communicable Diseases. A list of reportable conditions is provided in Chapter DHS 145 - Appendix A.

Some reportable diseases include: hepatitis, meningitis, pertussis (whooping cough), Lyme disease, tuberculosis, food and waterborne outbreaks, and sexually transmitted infections.  A Public Health Nurse will contact the individual, family and contacts to provide them with information and counseling about the disease. Public Health Nurses are available to answer questions that residents may have regarding a communicable disease. Fact sheets and pamphlets with information on specific diseases are also available on request.

The prevalence of communicable disease depends upon many environmental factors. For information on a specific communicable disease, please visit one of the following reputable websites: 

Centers for Disease Control and Prevention (CDC) ( 

Wisconsin Department of Health Services (