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Biological Health Hazard – Cyclosporiasis Outbreak: Texas


Published Date: 2017-08-01 12:36:45
Subject: PRO/AH/EDR> Cyclosporiasis – USA (02): (TX)
Archive Number: 20170801.5219001

Date: Sat 29 Jul 2017
Source: Outbreak News Today [edited]

Less than 2 weeks after issuing health advice, the Texas Department of State Health Services (DSHS) is reporting 145 cases of infection with the parasite, cyclospora. Counties hardest hit include Harris (35), Bexar (21), and Tarrant (14).

Long-lasting illnesses caused by the parasite, with symptoms like watery diarrhea, loss of appetite, and fatigue, have been seen in various parts of the state and have prompted public health experts to advise health care providers and the public to be aware of the symptoms and pursue testing when needed.

Past outbreaks have been associated with imported fresh produce, and disease investigators are busy gathering information about the current illnesses as they attempt to determine whether there is a common source for the current outbreak.

Cyclosporiasis is an intestinal illness caused by consuming food or water contaminated with the microscopic cyclospora parasite. The main symptom is watery diarrhea lasting a few days to a few months. Additional symptoms may include loss of appetite, fatigue, weight loss, abdominal cramps, bloating, increased gas, nausea, vomiting, and a low fever. Symptoms may come and go multiple times over a period of weeks or months.

communicated by:
ProMED-mail from HealthMap Alerts

[The outbreak is still unfolding and the source of infection is still unknown. If this outbreak is comparable to previous outbreaks, imported lettuce and sprouts may be the source. See previous ProMED-mail postings below. – Mod.EP

The state of Texas can be located on the HealthMap/ProMED-mail interactive map at A county map can be seen at – Sr.Tech.Ed.MJ]

See Also

Cyclosporiasis – USA: (TX): 20170719.5189199
Cyclosporiasis – Canada (02): (ON, BC): 20170716.5177711
Cyclosporiasis – France ex Mexico: (QR): 20170714.5174986
Cyclosporiasis – Mexico: (GJ) RFI: 20170708.5159937
Cyclosporiasis – Canada: (ON, BC): 20170703.5146527


Cyclosporiasis – USA: (TX) alert: 20160807.4399338
Cyclosporiasis – UK (02): ex Mexico (Riviera Maya) alert: 20160805.4396881
Cyclosporiasis – UK: ex Mexico 20160730.4381665


Cyclosporiasis – UK, Canada: ex Mexico, RFI 20151101.3759380
Cyclosporiasis – USA (05): ex Mexico 20150827.3606898
Cyclosporiasis – USA (04): ex Mexico 20150813.3576519
Cyclosporiasis – Canada 20150810.3569701
Cyclosporiasis – USA (03) 20150802.3553403
Cyclosporiasis – USA (02): (TX) 20150702.3479116
Cyclosporiasis – USA: (TX) increase in cases 20150624.3462421


Cyclosporiasis – USA (02): multistate 20140730.2646220
Cyclosporiasis – USA: (TX) 20140727.2638219


Cyclosporiasis – USA (14) 20130906.1926983


Cyclosporiasis – USA (02): background 20111002.2967

A ProMED-mail post
ProMED-mail is a program of the International Society for Infectious Diseases

It seems that Mexico is a hotspot for Cyclospora infections. There is no known animal reservoir so the infection is most probably transmitted when human feces are used to fertilize greens for human consumption.

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