Moderna’s new combination vaccine for seasonal influenza and COVID-19 has outperformed current standard vaccines in a large phase 3 clinical trial, showing stronger immune responses to both viruses in adults 50 years or older.
The findings, published May 7 in JAMA Network, come from a randomized study of more than 8,000 participants conducted across 146 U.S. sites. Participants either received the investigational combo vaccine mRNA-1083 or the standard influenza and COVID-19 vaccines recommended for their age group.
Among adults ages 50 to 64, mRNA-1083 generated a stronger immune response against all four influenza strains. In adults 65 and older, it outperformed the high-dose flu vaccine in three of the four strains. In both age groups, the vaccine also produced higher immune responses to SARS-CoV-2 compared to standard COVID-19 vaccine.
