--- ---  # First Human Case of New Swine Flu Strain Detected in the U.K. ## Video: Dogs Across the U.S. Are Falling Sick From a Mystery Illness. Here’s What to Know [Watch (HLS stream): Dogs Across the U.S. Are Falling Sick From a Mystery Illness. Here’s What to Know](https://cdn.jwplayer.com/manifests/GJveUVKp.m3u8) (1:40)  _Published 2023-11-21. A respiratory illness with an unknown cause is sickening dogs in Oregon and other states, prompting warnings from governments and veterinarians about keeping pets safe._ by [Marthe Fourcade / Bloomberg](https://time.com/author/bloomberg/) ## Marthe Fourcade / Bloomberg Nov 27, 2023 3:14 PM UTC  3D rendering of the h1n1 swine flu virus—related to, but not the same strain as in the recent case detected in the U.K. 3D rendering of the h1n1 swine flu virus—related to, but not the same strain as in the recent case detected in the U.K.Getty Images by [Marthe Fourcade / Bloomberg](https://time.com/author/bloomberg/) ## Marthe Fourcade / Bloomberg Nov 27, 2023 3:14 PM UTC U.K. health officials have reported a person with a flu strain typically found in pigs, marking the first time this variant has been detected in a human in the country. The U.K. Health Security Agency is working to determine any risks the pathogen might pose to human health, it said in a [statement](https://www.gov.uk/government/news/ukhsa-detects-human-case-of-influenza-ah1n2v) Monday. The person experienced only a mild illness and has fully recovered, according to the agency. It’s not unusual for flu viruses to jump to other species, but experts track those events closely for fear that the pathogen will adapt to the new host and become transmissible among humans. A swine flu virus sparked a pandemic in 2009 that affected millions of people globally. The U.K. case was detected as part of routine surveillance and the patient’s contacts are now being followed by health authorities. ### More From TIME “This is the first time we have detected this virus in humans in the U.K., though it is very similar to viruses that have been detected in pigs,” said Meera Chand, Incident Director at the Health Security Agency. “We are working rapidly to trace close contacts and reduce any potential spread.” The [variant](https://www.who.int/emergencies/disease-outbreak-news/item/2023-DON482) was first found in a minor in the U.S. state of Michigan earlier this year. First Human Case of New Swine Flu Strain Detected in the UK ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/6339959/uk-new-swine-flu/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/6339959/uk-new-swine-flu/"},"headline":"First Human Case of New Swine Flu Strain Detected in the U.K.","datePublished":"2023-11-27T15:14:27.000Z","dateModified":"2026-02-24T16:45:02.885Z","description":"U.K. officials reported a person with a flu strain that until now has been found only in pigs.","url":"https://time.com/6339959/uk-new-swine-flu/","keywords":["Disease","bloomberg wire"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/blteeb46dc320a15906/698a42becabb1df736e52012/swine-flu-3d-rendering.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Marthe Fourcade / Bloomberg"}],"articleSection":"Health","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/blteeb46dc320a15906/698a42becabb1df736e52012/swine-flu-3d-rendering.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675,"headline":"Structure of the h1n1 swine flu virus isolated","caption":"Structure of the h1n1 swine flu virus isolated","creditText":"Getty Images","representativeOfPage":true}],"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/disease/","name":"Disease"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/6339959/uk-new-swine-flu/","name":"First Human Case of New Swine Flu Strain Detected in the U.K."}}]},{"@context":"https://schema.org","@type":"VideoObject","name":"Dogs Across the U.S. Are Falling Sick From a Mystery Illness. Here’s What to Know","description":"A respiratory illness with an unknown cause is sickening dogs in Oregon and other states, prompting warnings from governments and veterinarians about keeping pets safe.","thumbnailUrl":"https://cdn.jwplayer.com/v2/media/GJveUVKp/poster.jpg?width=720","uploadDate":"2023-11-21T20:30:50.000Z","contentUrl":"https://cdn.jwplayer.com/manifests/GJveUVKp.m3u8","embedUrl":"https://time.com/6339959/uk-new-swine-flu/","duration":"PT1M40S","potentialAction":{"@type":"SeekToAction","target":"https://time.com/6339959/uk-new-swine-flu/?jw_start={seek_to_second_number}","startOffset-input":"required name=seek_to_second_number"}}] ```