There are cases of norovirus, a nasty and highly contagious stomach bug. Increase in parts of the United States According to government data, this winter.
The latest data from the US Centers for Disease Control and Prevention shows there were 91 outbreaks Norovirus reported During the week of December 5, up from 69 outbreaks in the last week of November.
Data for the past few years shows that a maximum of 65 outbreaks were reported during the first week of December.
Norovirus infection is characterized by sudden vomiting and diarrhea. there are outbreaks often seen on cruise shipsIn congregate living settings such as nursing homes and prisons, as well as in schools and places where people are in close proximity to each other. earlier this month, hundreds of cruise passengers fell ill with norovirus on three separate ships, according to the CDC, making a total of 14 reported virus outbreaks on ships this year. December has so far seen the highest number of cruise ship outbreaks in a one-month period than any other month in 2024.
Cases are also increasing on the ground. The Minnesota Department of Health recently reported 40 cases of norovirus, double the normal number for December. CBS News Minnesota Informed.
Here are some things to know about the virus.
Charles D. Humphrey/CDC via AP, File
According to the CDC, norovirus is the leading cause of foodborne illness in the United States, accounting for 58% of such infections in the country each year.
Health experts say norovirus infections are caused by a group of viruses that spread easily, with as few as 10 viral particles capable of making someone sick.
About 2,500 norovirus outbreaks are reported each year in the United States. Outbreaks can occur throughout the year but are most common from November to April.
Along with vomiting and diarrhea, common symptoms include nausea, stomach pain, body aches, headache and fever.
Most outbreaks of norovirus occur when already infected people spread the virus to others through direct means, such as through sharing food or eating utensils. Its outbreak can also spread through food, water or contaminated surfaces.
Illness caused by norovirus usually begins suddenly, with symptoms developing 12 to 48 hours after exposure to the virus. Most people recover and make a full recovery within one to three days.
But with 19 to 21 million illnesses each year in the United States, norovirus still causes an average of 900 deaths and 109,000 hospitalizations annually, mostly in adults age 65 and older. It also causes 465,000 emergency department visits, mostly involving young children.
People of all ages can become infected and fall ill with norovirus. Young children, older people, and those with weakened immune systems are most at risk, with dehydration from vomiting and diarrhea the biggest concern.
There is no medicine to treat norovirus. Rehydration is recommended by drinking water and other fluids, except coffee, tea and alcohol.
Anyone suffering from dehydration should seek medical attention. Symptoms of dehydration include decreased urination, dry mouth and throat, and dizziness when standing. Dehydrated babies may be unusually sleepy or irritable and cry with little or no tears.
The best defense against norovirus is vigorous and frequent hand washing during the peak winter season, by rubbing hands with soap and warm water for 20 seconds before meals.
Cleaning surfaces with household disinfectants may also help.