New Flu Strain 2024. The new vaccine will be based on the trivalent strains recommended by the u.s. • discuss the challenges and opportunities for vaccine strain composition with the reduced public health threat from influenza b/yamagata lineage viruses • no b/yamagata.

People may think of flu as. A rare flu variant that has shown some resistance to the most commonly used antiviral treatment has been detected in at least two people in the united states, according to the.