Promising COVID-19 Vaccine Candidates Here’s a list of the most promising COVID-19 vaccines right now and how they work! We hope this makes it easy to follow history in the making! Pfizer BioNTech BNT162B2, Moderna MRNA-1273How do mRNA vaccines work?Johnson & Johnson JNJ-78436735, ChAdOx AZD-1222Bharat Biotech CovaxinNovavax NVX-COV2373Sources: Bloomberg, European BiotechnologyFollow us on Instagram | Subscribe to receive our weekly posts in your inbox.