Jon CohenThe annual influenza vaccine saves lives and spares many people from severe disease, which is why governments and employers promote and subsidize its use.
But it’s hardly an ideal vaccine, offering so-so protection that wears off rapidly. A new, one-of-its-kind study helps explain those shortcomings.
A key cell type hidden in bone marrow that quickly kicks into activity after vaccination fades within a few months, researchers found.
The discovery could lead to new strategies to increase the vaccine’s durability.The best vaccines—such as the ones for measles, rubella, and diphtheria—provide almost 100% protection for life.