--- title: Norovirus and Stomach Flu: Report Links Outbreak to Oregon Lake description: An outbreak of norovirus—a human pathogen that causes stomach flu—last summer was linked to Blue Lake Regional Park in Oregon canonical: https://time.com/3881612/norovirus-lakes/ author: Mandy Oaklander article:opinion: false article:content_tier: free article:published_time: 2015-05-16T13:57:33.000Z article:modified_time: 2026-08-04T07:59:14.883Z article:section: Health og:title: An Outbreak of Norovirus Is Linked to a Popular Oregon Lake og:description: 15,400 people visited the lake that weekend og:url: https://time.com/3881612/norovirus-lakes/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltde093bcdab65f2d0/6988d9b9bc6cfc69913e2a3c/time-logo.jpg?branch=production og:image:width: 1200 og:image:height: 675 og:image:alt: TIME og:type: article twitter:card: summary_large_image twitter:title: An Outbreak of Norovirus Is Linked to a Popular Oregon Lake twitter:description: 15,400 people visited the lake that weekend twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltde093bcdab65f2d0/6988d9b9bc6cfc69913e2a3c/time-logo.jpg?branch=production --- # Outbreak of Norovirus Linked to a Popular Oregon Lake > Sponsored content. 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Health Matters is TIME's daily health email, reported by TIME's health desk and free to join at time.com/newsletters. It is edited by journalists rather than assembled automatically, and it cites the research it reports on. #### Is Health Matters free? Yes. Health Matters is a free daily newsletter from TIME, available at time.com/newsletters. #### Who reads TIME's Health Matters newsletter? Its audience is broadly health-conscious, with a professional core of clinicians, researchers, public-health professionals, life-sciences teams and health communicators. ## Video: Widespread Sickness Cuts Short Royal Caribbean Cruise [Watch (HLS stream): Widespread Sickness Cuts Short Royal Caribbean Cruise](https://cdn.jwplayer.com/manifests/xRnkADhf.m3u8) (1:34)  _Published 2014-01-27. Royal Caribbean passengers on board the Explorer of the Seas didn’t get quite the vacation they hoped for after some 600 people were sickened with symptoms consistent with norovirus._  by [Mandy Oaklander](https://time.com/author/mandy-oaklander/)  ## Mandy Oaklander Oaklander is a senior editor at TIME. May 16, 2015 1:57 PM UTC  by [Mandy Oaklander](https://time.com/author/mandy-oaklander/)  ## Mandy Oaklander Oaklander is a senior editor at TIME. May 16, 2015 1:57 PM UTC Flu season is over, but with the summer comes health concerns of a different pathogenic sort. An outbreak of the stomach bug norovirus last summer was linked to a popular lake destination in Oregon, found a new [study](http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6418a2.htm) released in the Center for Disease Control and Prevention’s Morbidity and Mortality Weekly Report. After the weekend of July 12, 2014, the Multnomah County Health Department received word of 13 cases of acute gastrointestinal illness from people who’d visited Blue Lake Regional Park, a popular lake near Portland, Ore., the weekend prior. The investigation identified 70 likely cases of norovirus, which causes stomach flu and is most famously known for striking [cruise ship passengers](http://time.com/3623128/norovirus-dawn-pricess/), from the weekend of July 11-13\. About 15,400 people visited the park that weekend, and the lake was closed for 10 days to control the outbreak. People who went swimming in the lake were 2.3 times more likely to get sick than those who visited but didn’t go in the water. Though the authors weren’t able to say for sure, the most likely cause of the outbreak was “a swimmer’s vomit or fecal incident in the lake,” the report reads. Lakes are especially vulnerable, the authors write, since they tend to attract small children and are not chemically treated. This isn’t the first time the lake has caught a nasty virus. In 1991, Blue Lake was linked to an outbreak of _E. coli_ and _Shigella_, and in 2004, it had an outbreak of norovirus that affected more than 100 people. ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/3881612/norovirus-lakes/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/3881612/norovirus-lakes/"},"headline":"Outbreak of Norovirus Linked to a Popular Oregon Lake","datePublished":"2015-05-16T13:57:33.000Z","dateModified":"2026-08-04T07:59:14.883Z","description":"15,400 people visited the lake that weekend","url":"https://time.com/3881612/norovirus-lakes/","keywords":["Public Health","norovirus","swimming"],"thumbnailUrl":"","author":[{"@type":"Person","name":"Mandy Oaklander","jobTitle":"Oaklander is a senior editor at TIME.","url":"https://time.com/author/mandy-oaklander/"}],"articleSection":"Health","image":[],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/health/","name":"Health"}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/public-health/","name":"Public Health"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/3881612/norovirus-lakes/","name":"Outbreak of Norovirus Linked to a Popular Oregon Lake"}}]},{"@context":"https://schema.org","@type":"VideoObject","name":"Widespread Sickness Cuts Short Royal Caribbean Cruise","description":"Royal Caribbean passengers on board the Explorer of the Seas didn’t get quite the vacation they hoped for after some 600 people were sickened with symptoms consistent with norovirus.","thumbnailUrl":"https://cdn.jwplayer.com/v2/media/xRnkADhf/poster.jpg?width=720","uploadDate":"2014-01-27T18:03:45.000Z","contentUrl":"https://cdn.jwplayer.com/manifests/xRnkADhf.m3u8","embedUrl":"https://time.com/3881612/norovirus-lakes/","duration":"PT1M34S","potentialAction":{"@type":"SeekToAction","target":"https://time.com/3881612/norovirus-lakes/?jw_start={seek_to_second_number}","startOffset-input":"required name=seek_to_second_number"}}] ```