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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
- Pet Store Puppies - Campylobacter September 2017
- Pet Turtles - Salmonella Agbeni August 2017
- Human Salmonella Typhimurium Infections Linked to Exposure to Clinical and Teaching Microbiology Laboratories July 2017
- Outbreaks of hepatitis A in multiple states among people who are homeless and people who use drugs March 2017
International Outbreaks
- 2017 Ebola Outbreak in Congo (DRC) Announced May 2017
Travel Notices Affecting International Travelers
Please see the Travelers' Health site for a complete list.
- Watch - Measles in Greece December 2017
- Watch - Measles in England December 2017
- Watch - Plague in Madagascar December 2017
- Watch - Lunar New Year December 2017
- Watch - Carnival and Mardi Gras December 2017
- Watch - 2018 Winter Olympics (PyeongChang 2018) November 2017
- Watch - Mumps in New Zealand November 2017
- Alert - Hurricanes Irma and Maria in the Caribbean November 2017
- Watch - Measles in Indonesia November 2017
- Watch - Measles in Italy November 2017
- Watch - Measles in Democratic Republic of the Congo November 2017
- Watch - Measles in Romania November 2017
- Watch - Measles in Ukraine November 2017
- Watch - Cholera in Chad October 2017
- Watch - Malaria in South Africa October 2017
- Watch - Malaria in Italy October 2017
- Watch - Chikungunya in Italy October 2017
- Alert - Malaria in Cyprus September 2017
- Watch - Malaria in Costa Rica September 2017
- Alert - Earthquakes and Hurricane in Mexico September 2017
- Alert - Flooding in South Asia September 2017
- Alert - Zika Virus in Costa Rica August 2017
- Alert - Zika Virus in Saint Vincent and the Grenadines August 2017
- Alert - Zika Virus in Grenada August 2017
- Alert - Zika Virus in Samoa August 2017
- Alert - Zika Virus in Marshall Islands August 2017
- Alert - Zika Virus in French Guiana August 2017
- Alert - Zika Virus in Sint Maarten August 2017
- Alert - Zika Virus in Saint Martin August 2017
- Alert - Zika Virus in Guyana August 2017
- Alert - Zika Virus in Ecuador and the Galapagos Islands August 2017
- Alert - Zika Virus in the Dominican Republic August 2017
- Alert - Zika Virus in Jamaica August 2017
- Alert - Zika Virus in Belize August 2017
- Alert - Zika Virus in Cuba August 2017
- Alert - Zika Virus in Nicaragua August 2017
- Alert - Zika Virus in Saint Lucia August 2017
- Alert - Zika Virus in Dominica August 2017
- Alert - Zika Virus in Peru August 2017
- Alert - Zika Virus in Angola August 2017
- Alert - Zika Virus in the British Virgin Islands August 2017
- Alert - Zika Virus in Guinea-Bissau August 2017
- Alert - Zika Virus in Singapore August 2017
- Alert - Zika Virus in the Solomon Islands August 2017
- Alert - Zika Virus in Saba August 2017
- Alert - Zika Virus in Turks and Caicos Islands August 2017
- Alert - Zika Virus in The Bahamas August 2017
- Alert - Zika Virus in Antigua and Barbuda August 2017
- Alert - Zika Virus in Sint Eustatius August 2017
- Alert - Zika Virus in Anguilla August 2017
- Alert - Zika Virus in Bolivia August 2017
- Alert - Zika Virus in Barbados August 2017
- Alert - Zika Virus in Aruba August 2017
- Alert - Zika Virus in Tonga August 2017
- Alert - Zika Virus in US Virgin Islands August 2017
- Alert - Zika Virus in Trinidad and Tobago August 2017
- Alert - Zika Virus in Montserrat August 2017
- Alert - Zika Virus in Saint Kitts and Nevis August 2017
- Alert - Zika Virus in Argentina August 2017
- Alert - Zika Virus in Curaçao August 2017
- Alert - Zika Virus in Bonaire August 2017
- Watch - Dengue in Vietnam August 2017
- Watch - Chikungunya in Brazil August 2017
- Alert - Malaria in Cape Verde August 2017
- Watch - Cholera in Yemen August 2017
- Alert - Rabies in Malaysia August 2017
- Watch - Dengue in Sri Lanka August 2017
- Alert - Polio in Nigeria July 2017
- Alert - Polio in Syria July 2017
- Alert - Polio in Democratic Republic of the Congo July 2017
- Alert - Nontuberculous Mycobacteria in Medical Tourists to the Dominican Republic July 2017
- Alert - MERS in the Arabian Peninsula June 2017
- Watch - Malaria in Burundi April 2017
- Watch - Avian Flu (H7N9) in China March 2017
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.
Further Sources for Content about Specific Outbreaks
- Multistate Foodborne Outbreaks – Foodborne outbreaks listed by year
- 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.
- Hepatitis A Outbreaks – This list represents hepatitis A outbreak investigations since 2013 where CDC supported or led the investigation.
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- Page last reviewed: December 8, 2017
- Page last updated: December 8, 2017
- Content source:
- Centers for Disease Control and Prevention
- Page maintained by: Office of the Associate Director for Communication, Division of Public Affairs