Cyclospora outbreaks with no confirmed sources grow: FDA

The FDA says cyclospora outbreaks linked to no identified sources are growing, even as the outbreak traced to iceberg lettuce continues to expand. Nearly 14,000 domestically acquired cyclospora cases have been confirmed in the U.S. since May, far above the roughly 1,180 reported between May and August last year, according to CDC data cited by the FDA. At least 9,480 cases were reported in 17 states tied to the iceberg-lettuce outbreak. Late last week, Maine and Massachusetts were added. FDA records show seven active investigations; only the lettuce-linked outbreak has a confirmed source.