These products can include a pdm09-like element that underwent quadruple reassortment. A universal form of this product has been designed using the stem of a hemagglutinin protein, (10[2]-5[1])which is one of two types of surface proteins found on the target of this product. (-5[2])In the USA, this product is moving to a trivalent composition as the (-5[1])Yamagata lineages are (10[1])no longer circulating. (10[1]-5[1])This yearly product (10[1])is traditionally (10[2])produced (10[4])by (10[1])growing (10[2])strains (10[3]-5[1])in (10[1])chicken (10[1])eggs. (10[5]-5[2])In (10[1])North America, (10[1])this (10[1])product is administered in (10[1])the (10[1])fall, (10[3])before the onset (10[4])of a (10[1])virus’ (10[4])namesake (10[2])“season”. (10[2])For (10[1])10 points, (10[1]-5[1])name this yearly (10[1])product, used against a respiratory virus (0[1])with subtypes like H1N1. (10[2])■END■ (10[4]0[1])