Relevance. Human Noroviruses (HuNoV) are highly contagious pathogens responsible of acute human norovirus infection. HuNoV is the cause of every fifth case of acute non-bacterial gastroenteritis. annually causing about 699 million cases of the disease and more than 200 thousand deaths worldwide. https://poolsproductscanadas.shop/product-category/pentair-triton-ii-parts/