Does your immunity still last for months? Today, Explained asked a researcher who has been studying omicron reinfections. This episode of Today, Explained was produced by Jon Ehrens, edited by Matthew Collette, fact-checked by Laura Bullard, engineered by Paul Mounsey, and hosted by Sean Rameswaram. Transcript at vox.com/todayexplained   Support Today, Explained and Recode Daily by making a financial contribution to Vox! bit.ly/givepodcasts Learn more about your ad choices. Visit podcastchoices.com/adchoices