You can’t kill norovirus with medication. There are no antivirals or antibiotics that work against it. The infection runs its course in one to three days for most people, and recovery depends on staying hydrated while your immune system clears the virus on its own. But getting rid of norovirus also means eliminating it from your home, because this virus is extraordinarily persistent on surfaces and spreads with remarkable ease.
Why Norovirus Is So Hard to Kill
Most viruses you encounter in daily life, like the flu or COVID, are wrapped in a fatty outer layer called a lipid envelope. That envelope is fragile. Soap, alcohol, and common disinfectants dissolve it easily, which destroys the virus. Norovirus has no such envelope. Instead, it’s protected by a thick protein shell that resists alcohol, standard cleaning sprays, and many commercial disinfectants.
This structural toughness is why alcohol-based hand sanitizers don’t work against norovirus. It’s also why the virus can survive on hard surfaces like countertops and doorknobs for more than two weeks, and on soft surfaces like carpet and upholstery for up to a week. On top of that, it takes only a few viral particles to cause a full infection, making even trace contamination dangerous.
Getting Through the Illness
The biggest risk during a norovirus infection isn’t the virus itself. It’s dehydration from vomiting and diarrhea. Your body loses fluids and electrolytes fast, especially in the first 24 to 48 hours. Sipping water, broth, or an oral rehydration solution steadily throughout the day matters more than trying to eat. Small, frequent sips are easier to keep down than drinking a full glass at once.
Once you can tolerate liquids without vomiting, bland foods like toast, rice, bananas, and plain crackers are the easiest to digest. Dairy, caffeine, alcohol, and fatty or heavily seasoned foods tend to make nausea and diarrhea worse and are best avoided until you feel fully recovered. Most people start feeling significantly better within 48 hours, though fatigue and a sensitive stomach can linger for a few more days.
Young children, older adults, and people with weakened immune systems are at higher risk for severe dehydration. Signs to watch for include dark urine, dizziness when standing, dry mouth, and in children, crying without tears or unusual sleepiness.
Cleaning Surfaces the Right Way
Standard household cleaners, including most antibacterial sprays and products based on quaternary ammonium compounds, are not effective against norovirus. Neither are alcohol-based wipes. The disinfectant that reliably works is chlorine bleach, and it needs to be used at a higher concentration than you’d normally mix for general cleaning.
The recommended solution is 1 cup of regular household bleach mixed with 10 cups of water, which produces a concentration of about 5,000 parts per million of chlorine. Apply this to hard surfaces like counters, toilet seats, faucet handles, and doorknobs, and let it sit for at least 10 minutes before wiping it away. If someone has vomited or had diarrhea on a surface, clean up the visible material first with paper towels (wearing gloves), bag those towels, then apply the bleach solution.
For surfaces that bleach would damage, like wood or certain stone countertops, look for EPA-registered disinfectants that specifically list norovirus or “non-enveloped viruses” on the label. Not all disinfectants that claim to be antiviral will work here.
Handwashing Over Sanitizer
Because alcohol-based hand sanitizer is ineffective against norovirus, soap and water is the only reliable option for hand hygiene during an outbreak. The mechanism is mechanical, not chemical. The friction of scrubbing with soap physically lifts and removes viral particles from your skin, then the rinse carries them away.
Wash for at least 20 seconds, paying attention to fingertips, between fingers, and under nails. The most important times are after using the bathroom, before eating, and before handling food. If you’re caring for someone who’s sick, wash your hands every time you leave their room or handle anything they’ve touched.
Laundry and Soft Surfaces
Contaminated clothing, towels, and bedding need special handling. Wear gloves when picking up soiled items, and try not to shake them, which can send viral particles into the air. Run a prewash cycle first to remove the bulk of contamination, then wash again on a regular cycle with detergent. Dry everything separately from other household laundry at a temperature above 170°F, which typically corresponds to the high heat setting on most dryers.
Carpet and upholstered furniture that have been contaminated are trickier. Steam cleaning at high temperatures is the most effective approach for soft surfaces. If that isn’t available, clean the area thoroughly with detergent, then apply a bleach solution if the material can tolerate it. Keep in mind that norovirus can remain viable on fabric for several days to a week, so cleaning sooner is better.
You’re Still Contagious After You Feel Better
One of the most important things to know about norovirus is that your symptoms and your contagiousness don’t end at the same time. You can continue shedding the virus in your stool for several weeks after you feel completely recovered. In people with compromised immune systems, shedding can continue for months.
This means rigorous handwashing needs to continue well beyond the point where you feel fine. Avoid preparing food for others for at least two to three days after your last symptoms, and ideally longer. In group settings like offices, schools, or daycare, returning too early is one of the most common ways outbreaks keep cycling through a population.
Preventing Reinfection at Home
Norovirus outbreaks within a household are extremely common because the virus spreads through direct contact, contaminated surfaces, and tiny airborne droplets released during vomiting. If one person in your home is sick, isolating them to a single bathroom when possible makes a significant difference. Disinfect shared surfaces in the kitchen and bathroom at least once a day during the illness and for several days after symptoms resolve.
Food safety also plays a role. Cook shellfish, especially oysters, to an internal temperature of at least 145°F. Thoroughly wash fruits and vegetables before eating them. Anyone who is currently sick or recently recovered should not be preparing meals for the household.
There is no approved vaccine for norovirus yet, though several candidates are in clinical trials. For now, the combination of aggressive handwashing, proper bleach-based disinfection, and careful hygiene during the weeks after recovery remains the most effective way to stop the virus from spreading further.