CDC Current Outbreak List
Infectious disease outbreaks currently being reported on by CDC. Listings include those outbreaks for which content is currently published on the CDC website.
U.S.-Based Outbreaks
Recent investigations reported on CDC.gov
- Organic Walnuts – E coli Outbreak Announced April 2024
- Fresh Basil – Salmonella Outbreak Announced April 2024
- Measles Outbreaks 2024 Announced January 2024
- Coronavirus Disease 2019 (COVID-19) Announced January 2020
Travel Notices Affecting International Travelers
Please see the Travelers’ Health site for a complete list.
- Level 2 - Global Polio April 2024
- Level 1 - Global Measles April 2024
- Level 1 - Oropouche Fever in South America April 2024
- Level 1 - Dengue in Africa and the Middle East April 2024
- Level 1 - Dengue in the Americas April 2024
- Level 1 - Dengue in Asia and the Pacific Islands April 2024
- Level 2 - Chikungunya in Timor-Leste April 2024
Understanding Outbreaks
In the last two years, CDC has sent scientists and doctors out more than 750 times to respond to health threats. Learn more below.
International Outbreaks
- Ebola Outbreak History Announced September 2022
- Mpox Outbreaks Announced May 2022
- Coronavirus Disease 2019 (COVID-19) Announced January 2020
Further Sources for Content about Specific Outbreaks
- Multistate Foodborne Outbreaks – Foodborne outbreaks listed by year
- Hepatitis A Outbreaks – Hepatitis A outbreak investigations since 2013 where CDC supported or led the investigation.
- US Outbreaks Linked to Contact with Animals or Animal Products
- Health Alert Network – Health alerts, health advisories, updates, and info service messages. Designed for public health and medical communities.
- Recent Outbreaks and Incidents – Events involving the CDC Emergency Operations Center
- Morbidity and Mortality Weekly Report – Outbreak investigation reports included among other content. Note that outbreak material includes state health department investigations. Designed for public health and medical communities.