Norovirus Back in Full Force as US Cases Surge
What is Norovirus?
Norovirus is the leading cause of foodborne illness in the United States, responsible for 58% of such infections acquired in the country each year, according to the Centers for Disease Control and Prevention (CDC). Norovirus infections are caused by a group of viruses that spread easily, with as few as 10 viral particles having the ability to make someone sick, health experts say. There are about 2,500 norovirus outbreaks reported annually in the United States, with the outbreaks most common from November to April.
How Do You Get It?
Most norovirus outbreaks occur when people who are already infected spread the virus to others by direct means, such as sharing food or eating utensils. Outbreaks can also be spread through food, water, or contaminated surfaces.
How Long Do You Stay Sick?
Illness caused by norovirus typically starts suddenly, with symptoms developing 12 to 48 hours following exposure to the virus. Most people get better within one to three days and recover fully.
Who’s at Risk?
People of all ages can get infected and fall sick from norovirus. Young children, older people, and those with weakened immune systems are most at risk, with dehydration from vomiting and diarrhea being the top concern.
How Can I Protect Myself?
Rigorous and frequent handwashing is the best defense against norovirus during the peak winter season, scrubbing the hands with soap and warm water for 20 seconds before meals. Scrubbing surfaces with household disinfectants can also help.
Frequently Asked Questions
- What are the symptoms of norovirus?
The most common symptoms include sudden vomiting and diarrhea, as well as nausea, stomach pain, body aches, headaches, and fever. - Can norovirus be treated?
There is no medication to treat norovirus. Rehydration is recommended by drinking water and other liquids, with the exception of coffee, tea, and alcohol. - How do you get norovirus?
Norovirus is typically spread through direct contact with an infected person, contaminated food, water, or surfaces. - How long does norovirus last?
Illness caused by norovirus typically starts suddenly, with symptoms developing 12 to 48 hours following exposure to the virus. Most people get better within one to three days and recover fully.
