SUMMARY

  Norovirus (NoV), also known as Norovirus, belongs to the family Calicivirus. It is mainly transmitted through contaminated water, food, etc., and is transmitted by contact or aerosol formed by pollutants. It has been recognized as the primary pathogen causing viral diarrhea and gastroenteritis in adults in Europe and the United States, and is the second pathogen secondary to rotavirus in children with viral diarrhea. In the outbreak of non-bacterial gastroenteritis, Norovirus occupies an important position, 30% to 50% of aseptic gastroenteritis is related to it, and 90% of viral gastroenteritis caused by food is Caused by the virus [4]. Norovirus is mainly divided into five genomes (GI, GII, GIII, GIV and GV). The main infections are GI, GII and GIV. The Norovirus of GII genome is the most common strain in the world. There are three methods for clinical or laboratory diagnosis of Norovirus infection, such as electron microscopy, molecular biology and immunological detection.