Most people who get the seasonal influenza vaccine – which contains strains of viruses from distinct virus subtypes – mount a strong immune response to one strain, leaving them vulnerable to infection by the others, and researchers have long wondered what impacts such variable responses more – host genetics or prior exposure to virus strains.
HHS dispatches millions to next-generation Covid targets, including intranasal vaccine
WASHINGTON — The Biden administration announced Friday that it is investing in three potential vaccines and a range of new technologies aimed at staying ahead