Pfizer, partnering with BioNTech, and Moderna have created promising covid-19 vaccines that scientists hope will lead to more medical breakthroughs using mRNA. Subscribe to The Washington Post on YouTube:Follow us: Twitter: Instagram: Facebook: a:nationalBioNTechCoronavirusCOVID-19COVID-19 immune systemCOVID19CREATEfluHelpedimmune systemIMMUNITYInfluenzaModernamRNAnewsOperation Warp SpeedpandemicPfizerRECORDs:Nationalsars coronavirus 2Scientistst:OriginalThe Washington PostTimeVaccinevaccine distributionvideoVITAMINvlogWaPo VideoWashington Post VideoWashington Post YouTubeYouTube