--- title: The 2019-2020 Flu Season Is Off to an Early Start description: The 2019-2020 flu season has officially begun, and it's earlier than normal. It's not clear how well the 2019-2020 flu shot is working. canonical: https://time.com/5746409/early-flu-season-2019-2020/ author: Jamie Ducharme article:opinion: false article:content_tier: free article:published_time: 2019-12-09T15:55:05.000Z article:modified_time: 2026-08-04T07:52:26.466Z article:section: Health og:title: Flu Season Is Off to an Earlier-than-Normal Start og:description: It's not clear how well the 2019-2020 vaccine is working og:url: https://time.com/5746409/early-flu-season-2019-2020/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltb8225b87df9fd3dc/698a0729b3fce34dd20c5fd1/flu-shot.jpg?branch=production&width=1024&quality=75&auto=webp&crop=16:9 og:image:width: 1024 og:image:height: 576 og:image:alt: 2019-2020 flu season og:type: article twitter:card: summary_large_image twitter:title: Flu Season Is Off to an Earlier-than-Normal Start twitter:description: It's not clear how well the 2019-2020 vaccine is working twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltb8225b87df9fd3dc/698a0729b3fce34dd20c5fd1/flu-shot.jpg?branch=production&width=1024&quality=75&auto=webp&crop=16:9 ---  # Flu Season Is Off to an Earlier-than-Normal Start, Raising Fears of a Severe Year > Sponsored content. Supplied in partnership with TIME. TIME is the sponsor and source of this material. > Last updated: September 2026. ## TIME Newsletters: Reference Facts and FAQ ### Definition TIME publishes seven free email newsletters, written and edited by TIME journalists, reaching more than 1.1 million engaged readers. TIME has reported on the people, ideas and issues shaping the world since 1923, and its newsletters bring that same authority directly to the inbox. 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Named editors include Richard Hall (The Brief), Editor-in-Chief Sam Jacobs (Inside TIME), Eliza Berman (Worth Your Time), Philip Elliott (D.C. Brief), Justin Worland (Future Proof) and Harry Booth (In the Loop). Health Matters is written by TIME's health desk. #### How do I sign up for a TIME newsletter? Go to time.com/newsletters, choose the newsletters you want and enter your email address. There is no cost and no subscription requirement. ### Sources * TIME Newsletters: [time.com/newsletters](/c/time-nl-network-2026q3/newsletters?i=ed7f3c9a-0877-46ff-924a-562971781d2d&cr=time-nl-network-2026q3-v1) ## Video: Here’s Why You Always Feel Sicker at Night [Watch (HLS stream): Here’s Why You Always Feel Sicker at Night](https://cdn.jwplayer.com/manifests/0D2Nw4Wc.m3u8) (1:30)  _Published 2019-02-07. Whether you’re dealing with the common cold, the flu or a stomach bug, you’ve probably noticed that your symptoms feel worse at night._  by [Jamie Ducharme](https://time.com/author/jamie-ducharme/)  ## Jamie Ducharme Ducharme is a contributor to TIME. Dec 9, 2019 3:55 PM UTC  A woman receives a flu shot at a Walgreens pharmacy in California on Jan. 22, 2018. A woman receives a flu shot at a Walgreens pharmacy in California on Jan. 22, 2018. Getty Images—2018 Getty Images  by [Jamie Ducharme](https://time.com/author/jamie-ducharme/)  ## Jamie Ducharme Ducharme is a contributor to TIME. Dec 9, 2019 3:55 PM UTC Flu season in the U.S. is off to an early start—which means a virulent winter may be impending. Influenza activity has been higher than normal for four weeks in a row, which many experts consider the official mark of flu season. As of the week ending Nov. 30, 3.5% of visits to health care providers nationwide were related to influenza-like illness, [according to the U.S. Centers for Disease Control and Prevention](https://www.cdc.gov/flu/weekly/index.htm) (CDC). Already, the country has seen about 1.7 million cases of the flu, 16,000 flu-related hospitalizations and 910 flu-related deaths, the CDC says. Six [children](https://time.com/5675467/california-pediatric-flu-death-vaccine/) have died so far. So far this year, flu activity has mainly been clustered in the south, with low prevalence in most northeast and mid-Atlantic states. Diagnoses are rising in the midwest and western regions. > [](https://twitter.com/CDCFlu/status/1203046085444427776) The last time the flu arrived this early was [the 2003-2004 season](https://www.cdc.gov/flu/weekly/weeklyarchives2003-2004/03-04summary.htm), which turned into a fairly severe one; at its peak, 10% of U.S. deaths were flu-related. The strain of influenza causing most illnesses this year is also atypical for this part of the calendar. Influenza B, which [typically circulates later in the season](https://time.com/5216990/influenza-b-flu-season-2018/), has been responsible for about 70% of the positive influenza tests collected so far by the CDC. It’s possible that the early flu season means either that fewer people got early-season vaccinations this year, or that the vaccine is less effective than normal. But the CDC says it’s too soon to say how well the shot is working, and emphasizes that there’s still plenty of time to get one, since flu season typically lasts several months. A flu shot remains the best way to prevent catching and spreading illness. The 2018-2019 flu season was [long but relatively mild](https://time.com/5610878/2018-2019-flu-season/), especially compared to the [severe year that preceded it](https://time.com/5183507/flu-season-peaked/). It’s too soon to say how the 2019-2020 flu season will compare—but doctors are bracing for a bad one. ## Transcript [ MUSIC ] [ MUSIC ] [ MUSIC ] [ MUSIC ] [ MUSIC ] ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/5746409/early-flu-season-2019-2020/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/5746409/early-flu-season-2019-2020/"},"headline":"Flu Season Is Off to an Earlier-than-Normal Start, Raising Fears of a Severe Year","datePublished":"2019-12-09T15:55:05.000Z","dateModified":"2026-08-04T07:52:26.466Z","description":"The 2019-2020 flu season has officially begun, and it's earlier than normal. 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