Scientists test new strategy for One-Shot flu protection

This early-stage study explored a new vaccination strategy aimed at creating broader protection against multiple flu strains, potentially moving toward a 'universal' flu vaccine. Researchers tested an H5N1 flu shot in 32 healthy adults, comparing those who had received previous experimental flu vaccines with those who hadn't. The main goal was to measure immune responses and safety over one year to see if this 'prime-boost' approach could teach the immune system to recognize parts of the virus common to many flu strains.