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Cyclosporiasis Outbreak Investigations — United States, 2015

Last Updated September 16, 2015 4:00 PM EDT

Highlights

  • Read the related statement from the U.S. Food and Drug Administration
  • Read the Advice to Consumers
  • Cyclospora cayetanensis is a single-celled parasite that causes an intestinal infection called cyclosporiasis.
  • As of September 14, 2015 (3pm EDT), CDC had been notified of 546 ill persons with confirmed Cyclospora infection from 31 states in 2015.
    • Most of these persons—319 (58%) of 546—experienced onset of illness on or after May 1, 2015, and did not have a history of international travel within 2 weeks before illness onset. These 319 persons were from the following 23 states: Arkansas (3), California (2), Connecticut (5), Florida (13), Georgia (26), Illinois (9), Iowa (1), Kansas (2), Maryland (1), Massachusetts (12), Michigan (2), Missouri (1), Montana (3), Nebraska (1), New Jersey (7), New Mexico (2), New York (excluding NYC) (10), New York City (22), North Carolina (1), Texas (179), Utah (1), Virginia (3), Washington (2), and Wisconsin (11).
    • Illness onset dates ranged from May 1 to August 22, 2015  (see epicurve). Ill persons ranged in age from 15 to 89 years, with a median age of 51 years. Fifty-six percent (56%) of ill persons were female.
    • Clusters of illness linked to restaurants or events have been identified in Texas, Wisconsin, and Georgia.
    • Epidemiologic and traceback investigations conducted in Texas, Wisconsin, and Georgia by state and local public health and regulatory officials and the FDA indicated that some illnesses among residents in these states were linked to fresh cilantro from Puebla, Mexico.
    • The vehicle(s) of infection for non-cluster-associated cases has not been identified.
    • The numbers of reported cases of cyclosporiasis in the United States have returned to baseline levels.
  • Previous U.S. outbreaks of cyclosporiasis have been linked to imported fresh produce, including cilantro from the Puebla region of Mexico. Read the related FDA Import Alert.
  • Consumers should continue to enjoy the health benefits of eating fresh fruits and vegetables as part of a well-balanced diet.
  • Consumers and retailers should always follow safe produce handling recommendations.
  • More information about Cyclospora can be found on CDC's Cyclospora pages.

Progression of the Outbreak Investigation

September Updates

September 15, 2015

Case Count Update

As of September 14, 2015 (3pm EDT), a total of 546 ill persons with confirmed Cyclospora infection were reported to CDC in 2015. Most of these persons—319 (58%) of 546—experienced onset of illness on or after May 1, 2015, and did not have a history of international travel within 2 weeks before illness onset. These 319 persons were from the following 23 states: Arkansas (3), California (2), Connecticut (5), Florida (13), Georgia (26), Illinois (9), Iowa (1), Kansas (2), Maryland (1), Massachusetts (12), Michigan (2), Missouri (1), Montana (3), Nebraska (1), New Jersey (7), New Mexico (2), New York (excluding NYC) (10), New York City (22), North Carolina (1), Texas (179), Utah (1), Virginia (3), Washington (2), and Wisconsin (11). Clusters of illness linked to restaurants or events have been identified and investigated in Texas, Wisconsin, and Georgia. Epidemiologic and traceback investigations conducted in Texas, Wisconsin, and Georgia by state and local public health and regulatory officials and the FDA indicated that some illnesses among residents in these states were linked to fresh cilantro from Puebla, Mexico. The vehicle(s) of infection for non-cluster-associated cases has not been identified. The numbers of reported cases of cyclosporiasis in the United States have returned to baseline levels.

More information about Cyclospora can be found on CDC’s Cyclospora pages.

August Updates

August 25, 2015

Case Count Update

As of August 21, 2015 (3pm EDT), a total of 495 ill persons with confirmed Cyclospora infection were reported to CDC in 2015. Most of these persons—293 (59%) of 495—experienced onset of illness on or after May 1, 2015, and did not have a history of international travel within 2 weeks before illness onset. These 293 persons were from the following 23 states: Arkansas (3), California (2), Connecticut (3), Florida (10), Georgia (23), Illinois (8), Iowa (1), Kansas (2), Maryland (1), Massachusetts (10), Michigan (2), Missouri (1), Montana (3), Nebraska (1), New Jersey (6), New Mexico (2), New York (excluding NYC) (9), New York City (21), North Carolina (1), Texas (168), Utah (1), Virginia (3), Washington (2), and Wisconsin (10). Clusters of illness linked to restaurants or events have been identified in Texas, Wisconsin, and Georgia. Cluster investigations are ongoing in Texas and Georgia. Cluster investigations in Wisconsin and Texas have preliminarily identified cilantro as a suspect vehicle. Investigations are ongoing to identify specific food item(s) linked to the cases that are not part of the identified clusters. 

August 18, 2015

Case Count Update

As of August 17, 2015 (3pm EDT), a total of 476 ill persons with confirmed Cyclospora infection were reported to CDC in 2015. Most of these persons—282 (59%) of 476—experienced onset of illness on or after May 1, 2015, and did not have a history of international travel within 2 weeks before illness onset. These 282 persons were from the following 22 states: Arkansas (2), California (2), Connecticut (3), Florida (10), Georgia (23), Illinois (7), Iowa (1), Kansas (2), Maryland (1), Massachusetts (9), Michigan (2), Missouri (1), Montana (3), Nebraska (1), New Jersey (6), New Mexico (2), New York (excluding NYC) (8), New York City (21), Texas (162), Utah (1), Virginia (3), Washington (2), and Wisconsin (10). Clusters of illness linked to restaurants or events have been identified in Texas, Wisconsin, and Georgia. Cluster investigations are ongoing in Texas and Georgia. Cluster investigations in Wisconsin and Texas have preliminarily identified cilantro as a suspect vehicle. Investigations are ongoing to identify specific food item(s) linked to the cases that are not part of the identified clusters. 

August 11, 2015

Case Count Update

As of August 10, 2015 (3pm EDT), a total of 457 ill persons with confirmed Cyclospora infection were reported to CDC in 2015. Most of these persons—275 (60%) of 457—experienced onset of illness on or after May 1, 2015, and did not have a history of international travel within 2 weeks before illness onset. These 275 persons were from the following 22 states: Arkansas (2), California (2), Connecticut (3), Florida (11), Georgia (22), Illinois (6), Iowa (1), Kansas (2), Maryland (1), Massachusetts (9), Michigan (2), Missouri (1), Montana (3), Nebraska (1), New Jersey (6), New Mexico (1), New York (excluding NYC) (8), New York City (21), Texas (157), Utah (1), Virginia (3), Washington (2), and Wisconsin (10). Clusters of illness linked to restaurants or events have been identified in Texas, Wisconsin, and Georgia. Cluster investigations are ongoing in Texas and Georgia. Cluster investigations in Wisconsin and Texas have preliminarily identified cilantro as a suspect vehicle. Investigations are ongoing to identify specific food item(s) linked to the cases that are not part of the identified clusters. 

August 4, 2015

Case Count Update

As of August 3, 2015 (4pm EDT), a total of 384 ill persons with confirmed Cyclospora infection were reported to CDC in 2015. Most (226; 59%) ill persons reported onset of illness on or after May 1, 2015 and no international travel. Clusters of illness linked to restaurants or events have been identified in Texas, Wisconsin, and Georgia. Cluster investigations are ongoing in Texas and Georgia. Cluster investigations in Wisconsin and Texas have preliminarily identified cilantro as a suspect vehicle. Investigations are ongoing to identify specific food item(s) linked to the cases that are not part of the identified clusters. 

More information about Cyclospora can be found on CDC’s Cyclospora pages.

INITIAL ANNOUNCEMENT

July 31, 2015

As of July 30, 2015 (11am EDT), a total of 358 ill persons with confirmed Cyclospora infection were reported to CDC in 2015. Most (199; 56%) ill persons reported onset of illness on or after May 1, 2015 and no international travel. Clusters of illness linked to restaurants or events have been identified in Texas, Wisconsin, and Georgia. Cluster investigations are ongoing in Texas and Georgia. Cluster investigations in Wisconsin and Texas have preliminarily identified cilantro as a suspect vehicle. Investigations are ongoing to identify specific food item(s) linked to the cases that are not part of the identified clusters. 

More information about Cyclospora can be found on CDC’s Cyclospora pages.

 

 

Cyclosporiasis Fact Sheet
Cyclosporiasis Fact Sheet [PDF - 955 KB]
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  • Page last updated: September 17, 2015
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