https://en.wikipedia.org/wiki/Norovirus에, The virus is named after the city of Norwalk, Ohio, where an outbreak occurred in 1968. 라고 나와있고,

Conly J, Johnston B (January 2003). "Norwalk virus - Off and running". The Canadian Journal of Infectious Diseases. 14 (1): 11–3. doi:10.1155/2003/702517. PMC 2094906. PMID 18159419.와
"Norovirus: The perfect pathogen". Knowable Magazine.에서도 영어 원문으로 확인가능합니다.