Unfortunately the H3 part of current flu vaccines have about 13% efficiency according to this article: https://www.scientificamerican.com/article/ldquo-the-pro

Unfortunately the H3 part of current flu vaccines have about 13% efficiency according to this article: https://www.scientificamerican.com/article/ldquo-the-problem-child-of-seasonal-flu-rdquo-beware-this-winter-rsquo-s-virus/ https://www.scientificamerican.com/article/ldquo-the-problem...