A outbreak of norovirus occurred at an elementary school located in Johnson County, Kansas in October 2017. Investigators distributed an online survey via email to all staff and parent of a student at the school. Thirty-five students and 8 staff members met the case definition, which was defined as vomiting, diarrhea or the detection of norovirus in an individual affiliated with the school from October 3, 2017 to October 10, 2017. Two persons were laboratory confirmed with norovirus genogroup II. No one was hospitalized and no one died.

The epidemic curve indicated a point-source outbreak, but no food items were found to
be significantly associated with illness. This outbreak may have been propagated by exposure to
viral particles through aerosolized vomitus, contact with contaminated environmental surfaces,
and from person-to-person transmission both at the school and in the community.