Information for Public Health Professionals
Surveillance and Outbreaks
Giardiasis is a nationally notifiable disease. This means that healthcare providers and laboratories that diagnose cases of laboratory-confirmed giardiasis are required to report those cases to their local or state health departments, which in turn report the cases to CDC.
For more information, see Nationally Notifiable Diseases.
Outbreaks of giardiasis affecting multiple people that are related to water, food, or person-to-person transmission should be reported to CDC by state health departments. It is important to inform local, state, and federal health authorities about cases of giardiasis so that appropriate public health responses can be taken to help control the spread of this disease.
- Giardiasis Case Surveillance
- Diagnosis and Treatment Information for Medical Professionals
- Giardiasis Outbreak Surveillance Report, 2012-2017
- Outbreak Data – select “Giardia” under the Etiology tab on the National Outbreak Reporting System (NORS) Dashboard
- Foodborne Outbreak Tracking and Reporting
- Foodborne Disease Outbreak Investigation and Surveillance Tools
- CDC. Diagnosis and Management of Foodborne Illness. MMWR Morb Mortal Wkly Rep. 2004;53(RR04):1-33.
- Surveillance Reports for Recreational Water-associated Disease and Outbreaks
- Recreational Water Illness Outbreak Response Toolkit
- Surveillance Reports for Drinking Water-associated Disease and Outbreaks
- Waterborne Disease Outbreak Investigation Toolkit
- The National Outbreak Reporting System (NORS) – Forms and Guidance