The Brief Galveston County health officials are investigating a recent increase in Cyclosporiasis, a foodborne illness caused by a microscopic parasite. At least 14 cases have been confirmed across the county, with four additional cases under investigation. Galveston County health authorities are issuing an alert after reporting an increase in Cyclosporiasis cases. Cyclosporiasis outbreak in Galveston CountyWhat we know:The Galveston County Health District says they are investigating an uptick in cyclosporiasis, a foodborne illness caused by the parasite Cyclospora cayetanensis. The Galveston County Health District says its investigation remains ongoing.