TY - GEN TI - Norovirus activity--United States, 2006-2007 SN - 1545-861X PY - 2007///0831 KW - Boston KW - epidemiology KW - Caliciviridae Infections KW - Cross Infection KW - Disease Outbreaks KW - Gastroenteritis KW - Humans KW - New York KW - Norovirus KW - North Carolina KW - Nursing Homes KW - Schools KW - United States KW - Wisconsin N1 - Publication Type: Journal Article ER -