By Marie Rosenthal, MS
Data released from the makers of the two messenger RNA (mRNA) vaccines against SARS-CoV-2 infection found that the vaccines are protective against circulating variants. However, Moderna said it would be proactive in addressing “the pandemic as the virus continues to evolve,” and Pfizer/BioNTech said it could quickly adapt the vaccine if it is no longer effective.
After a person receives an mRNA vaccine, their body produces copies of the spike (S) protein, which