Hello, it’s your health buddy! Let’s feel better together. Today, I’m here to share some symptom insights and helpful tips about Norovirus. Let’s dive in!
Norovirus infections are on the rise in the United States.
According to the Centers for Disease Control and Prevention (CDC), from August 1, 2024, to April 9, 2025, there were 2,407 norovirus outbreaks reported by states participating in the Norovirus Sentinel Testing and Tracking (NoroSTAT) network.
This number is significantly higher than the 1,230 outbreaks reported during the same period in the previous seasonal year.
The total number of outbreaks reported during the 2024–2025 seasonal year exceeds the range reported during the same period in the 2012–2020 and 2021–2024 seasonal years.
Norovirus outbreaks occur throughout the year but are most common from November to April.
Given this trend, health authorities anticipate that the number of cases may continue to rise.
What is Norovirus?
Norovirus is a contagious disease that spreads through contaminated food or contact with infected individuals.
During winter, it often spreads through seasonal ingredients like raw oysters or shellfish that haven’t been properly handled.
It can also be transmitted via droplets or stool from infected individuals.
Almost half (49.4%) of norovirus cases are reported in children aged 0–6, with another 18.9% occurring in those aged 7–18.
This means nearly 70% of infections occur in minors.
Outbreaks are especially common in group settings such as daycare centers, preschools, and schools.
While many assume norovirus is a summer issue due to food spoilage, it is actually nicknamed the “winter guest” because it survives even in extreme cold—down to -20°C (-4°F).
What Are the Symptoms of Norovirus?
Norovirus infection typically causes severe diarrhea, headache, and abdominal pain.
Some individuals may also experience low-grade fever or symptoms of dehydration for 1 to 3 days.
There is currently no vaccine for norovirus.
Although most people recover naturally without specific treatment, the symptoms can be distressing and require careful management.
Can It Be Prevented?
The first step in prevention is handwashing.
Wash hands thoroughly with soap under running water for at least 30 seconds.
Always wash hands after going outside, meeting others, using the restroom, coughing or sneezing, and blowing your nose.
It’s also important to cook food thoroughly.
When using kitchen tools like knives and cutting boards, sanitize them regularly and use different sets for vegetables, meat, and seafood.
Childcare facilities should ensure caregivers wash their hands thoroughly after changing diapers and before and after meals.
What If You’re Infected?
If someone becomes infected, it's important to isolate them from other household members.
After using the toilet, flush with the lid closed to prevent secondary infections.
Clean and disinfect items the infected person has touched using a 2:1 diluted bleach solution.
Norovirus is highly contagious—even touching objects handled by an infected person can lead to transmission.
Children and students should stay home from school or daycare for at least 48 hours to prevent spreading the virus to others.
Your health buddy is here for you. Wishing you a healthy and happy day ahead. Stay well!💖
This content is for informational purposes only and does not hold any individual or entity legally responsible. For accurate diagnosis and treatment of symptoms, please visit a nearby medical institution. This does not represent my final medical opinion and may vary depending on specific circumstances and evolving medical perspectives.
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