Dominant Flu Strain 2024. The covid jabs target a strain called kp.2, a descendant of the highly contagious omicron subvariant jn.1 that began circulating widely in the u.s. Seasonal influenza (flu) vaccines are designed to protect against the four main groups of flu type a and b viruses that research indicates are most likely to spread.

Seasonal influenza (flu) vaccines are designed to protect against the four main groups of flu type a and b viruses that research indicates are most likely to spread. A newly discovered covid strain known as xec continues to spread rapidly across multiple countries,.