u/Far_Initiative_8423

Came across this paper the other day from David Ho's group at Columbia. They found that a large proportion of sera tested had cross neutralizing activity against clade 2.3.4.4b H5N1, and that this was largely due to neuraminidase-directed cross protectiveness.

Excerpt from Text

Our findings show that two-thirds of adults tested had serum antibodies capable of neutralising H5N1 clade 2.3.4.4b, suggesting that they could protect against this highly pathogenic avian influenza. We also note that this cross-neutralising activity was largely mediated by N1 neuraminidase-directed antibodies, suggesting the importance of neuraminidase in the design of future influenza vaccines.