The Centers for Disease Control and Prevention has released its final report on multiple cases of cyclosporiasis this year, concluding that 10% were linked to imported basil from Mexico.
While the CDC confirmed more than 2,400 cases of the illness from May 1 to the end of August, it was able to link 241 cases to fresh basil from Siga Logistics de RL de CV of Morelos, Mexico, according to a Nov. 19 CDC report on Cyclospora infections. That number was unchanged from a Sept. 30 CDC report on the outbreak.
In its Nov. 19 report, the CDC says it confirmed 2,408 cases of cyclosporiasis in 37 states, Washington, D.C., and New York City. No deaths were reported, but 144 people were hospitalized.
The CDC reported multiple cases associated with restaurants and events that were investigated by state health authorities, the CDC and the Food and Drug Administration.
The number of cases of cyclosporiasis from May through August was higher than the same periods in 2018 and 2017, but that could be attributed to changes in testing practices. The CDC said more cases are being investigated by using multiplex molecular testing.
“CDC is working with state public health partners to determine whether and to what extent changes in testing practices may have contributed to increased case detection and reporting,” according to the report.
Most cases of cyclosporiasis, when a source is determined, have come from imported produce, according to the CDC.