OAK PARK, Calif. (AP) — Ventura County health officials say a stomach virus outbreak has caused more than 300 absences from Medea Creek Middle School in the past week.
Health chief Dr. Robert Levin says it's unclear how many absences were caused by illness, rather than parents who kept their kids home to avoid the norovirus outbreak.
On Thursday, 80 students were reported sick, followed by 150 absences on Friday and more than 90 absences on Monday.
Norovirus can causes inflammation to the stomach, intestines or both, resulting in pain, vomiting and diarrhea.
The illness is very easy to transmit through an infected person, contaminated food or water or contaminated surfaces.
Levin says an investigation has begun and foodborne illness has been ruled out, but the origin of the outbreak may be tough to pinpoint.