Challenges of Deciding Whether and How to Update COVID-19 Vaccines to Protect Against Variants by JAMA

 

Some people wonder why COVID-19 vaccines haven’t been updated to protect better against variants, the way seasonal influenza vaccines are changed every year depending on circulating strains. The problem is we don’t yet know the rules SARS-CoV-2 plays by. Many questions remain: Is #SARSCoV2 seasonal, like influenza? How frequently are concerning variants likely to pop up? Would people be willing to get vaccinated against #COVID19 every year or even more often? https://ja.ma/3NbrtLE