As of October 21, 2026, about 85 students and staff at Bentwood Elementary School in Overland Park, Kansas, part of the Olathe Public Schools, have been sick with norovirus over the past week, according to the Johnson County Department of Health and Environment, which confirmed the outbreak to KCTV5. Two cases were confirmed by laboratory testing; the rest are counted because the people had the same symptoms at the same time in the same building. The report does not mention any hospitalizations. The school told families in a letter on Monday, October 19, that absences had “declined significantly” after a deep cleaning over the weekend.
Absences spiked the week of October 12 and the health department was called in.
Absence rates were high early last week, with students reporting the same vomiting and diarrhea, which prompted the school to coordinate with the county health department. The building received extra sanitation over the weekend of October 17 and 18, and the district says it is being cleaned and disinfected daily with hospital-grade products that work against norovirus, with added attention to high-touch surfaces. The health department says it will keep monitoring and provide guidance as needed. No source has been identified; in school outbreaks one rarely is, because norovirus moves through hands, surfaces and shared food, and one sick child can seed a classroom.
The district has been here before. In October 2022, Olathe closed Clearwater Elementary for the better part of a week after roughly 150 of its 567 students and staff were out sick; the county later identified norovirus, and the Kansas Department of Agriculture found no food safety problem in the cafeteria.
| Figure | Bentwood Elementary, Oct. 2026 | Source |
| Cases reported over the past week | About 85 | JCDHE via KCTV5, Oct. 21 |
| Lab-confirmed | 2 | JCDHE via KCTV5 |
| Epidemiologically linked (same symptoms, same time, same setting) | About 83 | Computed: 85 minus 2 |
| Hospitalizations | Not mentioned | KCTV5 |
| Letter to families | Monday, Oct. 19 | Olathe Public Schools via KCTV5 |
| Deep cleaning | Weekend of Oct. 17 and 18 | KCTV5 |
Source: KCTV5, October 21, 2026, citing the Johnson County Department of Health and Environment and school officials. Check: 2 confirmed plus about 83 linked equals about 85.
Norovirus symptoms start 12 to 48 hours after exposure and usually last one to three days.
Norovirus is the leading cause of vomiting and diarrhea in the United States: CDC counts 19 to 21 million illnesses, 109,000 hospitalizations and 900 deaths a year, and 58 percent of all foodborne illness, with the season running from November to April. Symptoms begin 12 to 48 hours after exposure: sudden vomiting, watery diarrhea, nausea and stomach pain, sometimes a low fever, headache and body aches. Most people are better in one to three days. There is no medicine for it and antibiotics do not help, because it is a virus.
The danger is dehydration, especially in young children. Call a doctor if a child is urinating less than usual, has a dry mouth, cries with few or no tears, is dizzy when standing or is unusually sleepy or fussy. Keep sick children sipping water or an oral rehydration solution often, even if they cannot keep much down at first.
A child is contagious for at least two days after the vomiting stops, and the virus survives hand sanitizer.
CDC’s rule for schools and daycares is to keep a sick child home until at least 48 hours after the last episode of vomiting or diarrhea. People shed the virus for two weeks or more after they feel better, which is why outbreaks in schools keep rolling after the first wave. Hand sanitizer “does not work well against norovirus”; soap and water for at least 20 seconds is what removes it, after every bathroom trip and before every meal. For cleanup at home, CDC says to use a chlorine bleach solution of 1,000 to 5,000 parts per million, 5 to 25 tablespoons of bleach in a gallon of water, left on the surface at least five minutes.
What parents in Olathe and Overland Park should do now
Keep a sick child home for two full days after the last vomiting or diarrhea, not just until they feel better. Wash everyone’s hands with soap and water, disinfect the bathroom with bleach solution, and do not let a sick person prepare food. If your child needs a doctor, mention the school outbreak so the case can be counted; only two of the 85 have been lab-confirmed. If you believe the illness came from food served at school or elsewhere, keep the receipt or menu and write down what was eaten and when. Earlier posts on this blog explain what norovirus is and why most land-based outbreaks never get counted.
How long after norovirus can my child go back to school?
At least 48 hours after the last episode of vomiting or diarrhea, per CDC. Children still shed the virus after that, so handwashing with soap and water should continue for two weeks.
Does hand sanitizer kill norovirus?
No. CDC says alcohol hand sanitizer does not work well against norovirus. Wash with soap and water for at least 20 seconds; sanitizer can be used in addition, never instead.
How do I clean my house after norovirus?
Use a bleach solution of 5 to 25 tablespoons of household bleach per gallon of water on hard surfaces, leave it for at least five minutes, and wash contaminated laundry in hot water on the longest cycle before drying on high heat.
About Marler Clark
Marler Clark, the Food Safety Law Firm, is the nation’s leading law firm representing victims of norovirus and other foodborne illness outbreaks, and has represented people sickened by norovirus in outbreaks linked to restaurants, oysters, catered events and cruise ships. If you or a family member became ill with norovirus after eating contaminated food, the attorneys at Marler Clark are available for a free case evaluation at 1-800-884-9840.
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