{"id":300119,"date":"2026-07-19T19:11:13","date_gmt":"2026-07-19T19:11:13","guid":{"rendered":"https:\/\/www.newsbeep.com\/us-ny\/300119\/"},"modified":"2026-07-19T19:11:13","modified_gmt":"2026-07-19T19:11:13","slug":"before-lettuce-felled-thousands-a-cilantro-linked-cyclospora-outbreak-sickened-new-yorkers","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/us-ny\/300119\/","title":{"rendered":"Before Lettuce Felled Thousands, a Cilantro-Linked Cyclospora Outbreak Sickened New Yorkers"},"content":{"rendered":"<p class=\"css-18blb2c e1me5xab0\">The leading suspect, it seemed, was the cilantro.<\/p>\n<p class=\"css-18blb2c e1me5xab0\">Weeks before an outbreak of cyclosporiasis, now traced at least in part to iceberg lettuce, <a class=\"css-povzk\" href=\"https:\/\/www.nytimes.com\/2026\/07\/15\/well\/eat\/cyclospora-stomach-bug-what-to-know.html\" title=\"\" rel=\"nofollow noopener\" target=\"_blank\">laid low thousands of Americans this summer<\/a>, the New York City Health Department investigated a smaller outbreak. Testing labs and doctors notified the city that people were coming down with the intestinal illness, which is caused by a parasite and can result in explosive diarrhea and other types of gastric distress.<\/p>\n<p class=\"css-18blb2c e1me5xab0\">The New York investigation back in April \u2014 one of multiple case clusters the city\u2019s disease detectives have pursued this year \u2014 led to cilantro.<\/p>\n<p class=\"css-18blb2c e1me5xab0\">But how exactly do health authorities figure out how people got sick?<\/p>\n<p class=\"css-18blb2c e1me5xab0\">City officials shared details of the cilantro case with The New York Times. The city\u2019s work is only one link in a chain that also involves state and federal disease surveillance efforts, but it helps illustrate how complicated it can be to pinpoint sources of contamination in a global food-supply system. The C.D.C. says it is continuing to investigate cyclosporiasis cases unrelated to the <a class=\"css-povzk\" href=\"https:\/\/www.nytimes.com\/2026\/07\/18\/health\/taylor-farms-iceberg-lettuce-recall.html\" title=\"\" rel=\"nofollow noopener\" target=\"_blank\">iceberg lettuce contamination<\/a>.<\/p>\n<p class=\"css-18blb2c e1me5xab0\">So far this year, 442 cases of cyclosporiasis have been diagnosed in the city \u2014 far above the average of 216 cases for an entire year <a class=\"css-povzk\" href=\"https:\/\/a816-health.nyc.gov\/hdi\/epiquery\/visualizations\/?PageType=ts&amp;PopulationSource=CDSD&amp;Topic=1&amp;Subtopic=43\" title=\"\" rel=\"noopener noreferrer nofollow\" target=\"_blank\">during the period 2019 to 2024<\/a>.<\/p>\n<p class=\"css-18blb2c e1me5xab0\">Cyclosporiasis is tricky to trace because it can incubate inside you for up to 14 days before producing symptoms. \u201cPeople may not put two and two together that it was something I ate two weeks ago that got me sick,\u201d said HaeNa Waechter, the team lead for enteric disease in the City Health Department\u2019s Bureau of Communicable Disease.<\/p>\n<p class=\"css-18blb2c e1me5xab0\">\u201cFirst you have to have gotten sick, then you sought care, then you were reported to us, and then we\u2019re interviewing you. That could be weeks, so by the time we\u2019re asking \u2018What did you eat the 14 days before you got sick?\u2019 it can be really challenging to remember,\u201d she said.<\/p>\n<p class=\"css-18blb2c e1me5xab0\">The health department\u2019s investigators guide people through reconstructing their recent dietary histories, a task made harder by the fact that the city has 28,000 restaurants and 17,000 food retailers.<\/p>\n<p class=\"css-18blb2c e1me5xab0\">\u201cYou may go to a lot of different markets to pick up different things,\u201d Ms. Waechter said. \u201cSo we ask about all of that and try to help the patients remember.\u201d<\/p>\n<p class=\"css-18blb2c e1me5xab0\">In the April case, the Health Department determined that everyone in the cyclosporiasis cluster had eaten at the same Brooklyn restaurant, which the department declined to identify.<\/p>\n<p class=\"css-18blb2c e1me5xab0\">Everyone who fell ill seemed to have had guacamole or salsa, or cilantro, an herb that is added raw to many dishes in Mexican cuisine. The department\u2019s Office of Environmental Investigations paid the restaurant a visit.<\/p>\n<p class=\"css-18blb2c e1me5xab0\">\u201cWe\u2019ll walk through with the manager or food handler and ask them to go through a food prep review with us about those menu items, which is basically a step-by-step, ingredient-by-ingredient review of how those menu items are prepared,\u201d said Joanne Casarella, the chief of food-borne illness investigations in the Office of Environmental Investigations.<\/p>\n<p class=\"css-18blb2c e1me5xab0\">The investigators also interviewed the sick people\u2019s dining partners. \u201cThat allows us to try and find our control group \u2014 people who didn\u2019t get sick \u2014 to see if we can compare what they ate or we find additional ill folks,\u201d Ms. Waechter said.<\/p>\n<p class=\"css-18blb2c e1me5xab0\">They called other customers from the restaurant\u2019s reservation list and found more patients. Between five and 10 people were sickened altogether.<\/p>\n<p class=\"css-18blb2c e1me5xab0\">The guacamole and salsa also turned out to contain cilantro. Genomic sequencing by the city\u2019s Public Health Laboratory confirmed that all the patients in the cluster had the same strain of cyclospora, the parasite that causes cyclosporiasis, in their systems.<\/p>\n<p class=\"css-18blb2c e1me5xab0\">The Health Department sent its findings to the C.D.C., along with records from the restaurant like invoices from its food suppliers.<\/p>\n<p class=\"css-18blb2c e1me5xab0\">\u201cWe recommended that they look into the cilantro, so that\u2019s what they did the \u2018traceback\u2019 for,\u201d said Shama Ahuja, assistant commissioner in the City Health Department\u2019s Bureau of Communicable Disease. The C.D.C., Dr. Ahuja said, told the city that the local supplier that had sold the cilantro to the restaurant had bought it from a national supplier that in turn had obtained it from an international supplier. The C.D.C. has not announced any results or any actions it may have taken, the city said.<\/p>\n<p>\u2018It sounded delicious\u2019<\/p>\n<p class=\"css-18blb2c e1me5xab0\">A few weeks after the cilantro case, the city received a 311 complaint: Several dozen employees at a company got sick after attending a catered luncheon in Manhattan. At least 18 tested positive for cyclosporiasis.<\/p>\n<p class=\"css-18blb2c e1me5xab0\">This investigation presented a different set of challenges: Everyone who had gotten sick had eaten a bowl containing a base of the same raw vegetables and fruits. (\u201cIt sounded delicious,\u201d Ms. Waechter said.)<\/p>\n<p class=\"css-18blb2c e1me5xab0\">The investigators narrowed their inquiry to five ingredients: cucumbers, pears, snow peas, carrots and cilantro. They sent the list, and the caterer\u2019s invoices from its suppliers, to the C.D.C. to determine the provenance of each item and see if any were linked to other cases elsewhere.<\/p>\n<p class=\"css-18blb2c e1me5xab0\">\u201cWe can\u2019t be 100 percent certain about what we\u2019re saying,\u201d Dr. Ahuja said. \u201cWe can just tell you where the data pointed us.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"The leading suspect, it seemed, was the cilantro. Weeks before an outbreak of cyclosporiasis, now traced at least&hellip;\n","protected":false},"author":2,"featured_media":300120,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[33345,81473,9,24,56,63,65,64,24463,821,901],"class_list":["post-300119","post","type-post","status-publish","format-standard","has-post-thumbnail","category-new-york-city","tag-centers-for-disease-control-and-prevention","tag-health-and-mental-hygiene-department-nyc","tag-new-york","tag-new-york-city","tag-ny","tag-nyc","tag-nyc-headlines","tag-nyc-news","tag-parasites","tag-restaurants","tag-united-states"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/us-ny\/wp-json\/wp\/v2\/posts\/300119","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/us-ny\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/us-ny\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ny\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ny\/wp-json\/wp\/v2\/comments?post=300119"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/us-ny\/wp-json\/wp\/v2\/posts\/300119\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ny\/wp-json\/wp\/v2\/media\/300120"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/us-ny\/wp-json\/wp\/v2\/media?parent=300119"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ny\/wp-json\/wp\/v2\/categories?post=300119"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ny\/wp-json\/wp\/v2\/tags?post=300119"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}