Head to linode.com/scishow to get a $100 60-day credit on a new Linode account. Linode offers simple, affordable, and accessible Linux cloud solutions and services. After the success of the COVID-19 vaccines, researchers are working hard to bring that same mRNA technology to annual flu vaccines. And our friend at Journey to the Microcosmos got the best glimpse to date at an elusive ciliate! Hosted by: Hank Green (he/him) Thumbnail image by James Weiss SciShow is on TikTok! Check us out at www.tiktok.com/@scishow ---------- Support SciShow by becoming a patron on Patreon: www.patreon.com/scishow ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Matt Curls, Alisa Sherbow, Dr. Melvin Sanicas, Harrison Mills, Adam Brainard, Chris Peters, charles george, Piya Shedden, Alex Hackman, Christopher R, Boucher, Jeffrey Mckishen, Ash, Silas Emrys, Eric Jensen, Kevin Bealer, Jason A Saslow, Tom Mosner, Tomás Lagos González, Jacob, Christoph Schwanke, Sam Lutfi, Bryan Cloer ---------- Looking for SciShow elsewhere on the internet? SciShow Tangents Podcast: scishow-tangents.simplecast.com/ Facebook: www.facebook.com/scishow Twitter: www.twitter.com/scishow Instagram: instagram.com/thescishow #SciShow #science #education ---------- Sources: www.cdc.gov/flu/pandemic-resources/1918-commemoration/1918-pandemic-history.htm www.cdc.gov/flu/pandemic-resources/basics/faq.html www.cdc.gov/coronavirus/2019-ncov/vaccines/different-vaccines/how-they-work.html www.cdc.gov/flu/about/viruses/types.htm www.nature.com/articles/s41577-019-0143-6 www.cdc.gov/flu/about/viruses/human-serology.html www.eurekalert.org/news-releases/971932 www.science.org/doi/10.1126/science.abm0271 www.sciencedirect.com/science/article/pii/S1434461022000578 Image Sources: www.gettyimages.com/detail/photo/bottles-of-influenza-vaccine-ottles-with-a-syringe-royalty-free-image/1250471564?phrase=flu%20shot&adppopup=true www.gettyimages.com/detail/photo/rat-in-lab-royalty-free-image/153740100?phrase=lab%20mouse&adppopup=true www.cdc.gov/flu/about/viruses/types.htm commons.wikimedia.org/wiki/File:Antibody.svg commons.wikimedia.org/wiki/File:Influenza_Vaccine_(51551576704).jpg www.gettyimages.com/detail/photo/printout-royalty-free-image/534423775?phrase=3d%20printer&adppopup=true www.gettyimages.com/detail/photo/antibodies-background-royalty-free-image/1358868801?phrase=antibody&adppopup=true www.gettyimages.com/detail/photo/doctor-or-nurse-gives-flu-vaccine-to-patient-at-royalty-free-image/618631618?phrase=flu%20shot&adppopup=true commons.wikimedia.org/wiki/File:Influenza_geneticshift.svg www.sciencedirect.com/science/article/pii/S1434461022000578#b0040 Videos courtesy of James Weiss