Giuseppe Michieli<p>Increase of <a href="https://mstdn.science/tags/Synergistic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Synergistic</span></a> Secondary <a href="https://mstdn.science/tags/Antiviral" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Antiviral</span></a> <a href="https://mstdn.science/tags/Mutations" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Mutations</span></a> in the <a href="https://mstdn.science/tags/Evolution" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Evolution</span></a> of <a href="https://mstdn.science/tags/H1N1pdm09" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>H1N1pdm09</span></a> <a href="https://mstdn.science/tags/Influenza" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Influenza</span></a> Virus <a href="https://mstdn.science/tags/Neuraminidases" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Neuraminidases</span></a>, Vaccines: <a href="https://www.mdpi.com/1999-4915/16/7/1109" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">mdpi.com/1999-4915/16/7/1109</span><span class="invisible"></span></a> </p><p>The data indicate a slight increase in viral NA bearing two additional potentially synergistic substitutions, NA-I223V and NA-S247N, in the 2023–2024 season, which both result in a slight reduction in susceptibility to NA inhibitors.</p>