Posted: September 14, 2021 at 8:09 pm TWG Source Moderna combines COVID, flu, RSV vaccines in single shot; achieves positive pre-clinical data [what it means] Moderna recently announced that it was able to combine 6 different mRNAs—one strain of COVID-19 and RSV each, and four strains of flu— into a single shot; a new vaccine combining a COVID-19 booster shot and a flu shot is also in development. Via Leave a Reply Cancel replyYou must be logged in to post a comment.