Most people recover from the stomach bug within 1 to 3 days. The worst of the vomiting and diarrhea typically peaks in the first 24 hours, then gradually tapers off. But “feeling better” and “fully recovered” are two different things. Your digestive system can stay sensitive for a week or more after the acute phase ends, and you remain contagious even longer than that.
The Typical Timeline From Start to Finish
After exposure, the virus incubates for 12 to 48 hours before you feel anything. Then symptoms hit fast, often within a few hours of the first wave of nausea. The acute phase, meaning the vomiting, watery diarrhea, cramping, and sometimes low-grade fever, lasts 1 to 3 days for most healthy adults. Children and older adults tend to land on the longer end of that range.
Day one is usually the roughest. Vomiting often comes first and can be intense for 12 to 24 hours before it starts to ease. Diarrhea may continue a day or two longer. By day three, most people are able to keep food down and feel significantly better, even if their energy hasn’t fully bounced back.
What’s Circulating Right Now
The dominant strain in the current season is GII.4 Sydney, which has accounted for roughly half of reported outbreaks tracked by the CDC between September 2025 and March 2026. GII.17 is the second most common. GII.4 strains have been the leading cause of norovirus illness worldwide for years. They’re highly contagious but don’t appear to cause longer illness than other strains. If you’re dealing with the stomach bug right now, the 1 to 3 day recovery window still holds.
Why You Still Feel Off After the Worst Is Over
Even after the vomiting and diarrhea stop, your gut lining needs time to heal. Many people notice bloating, mild nausea, reduced appetite, or loose stools for another 5 to 10 days. Dairy and fatty or spicy foods tend to be the biggest triggers during this recovery window, because the enzymes that break them down are temporarily depleted.
Ease back into eating with bland, easy-to-digest foods: plain rice, toast, bananas, broth. You don’t need to follow a strict diet, but if something makes your stomach churn, pull back and try again in a day or two. Most people are eating normally within a week of their last acute symptom.
How Long You’re Contagious
This is the part that surprises most people. You can still spread norovirus for two weeks or more after you feel completely fine. The virus continues shedding in your stool long after the diarrhea stops. The highest risk of spreading it is during the acute illness and the first 48 to 72 hours after symptoms resolve, but the extended shedding window means careful hand hygiene matters for much longer than you’d expect.
Norovirus also survives on hard surfaces like countertops, doorknobs, and plastic for up to two weeks. On soft surfaces like carpet or upholstery, it can remain viable for several days to a week. This is a major reason entire households tend to get hit one person at a time over the span of a week or two. Thorough cleaning with a bleach-based solution, not just regular household spray, is important for breaking that chain.
Recovery in Children and Babies
Children generally follow the same 1 to 3 day acute timeline, but dehydration is a bigger concern because their smaller bodies have less fluid reserve. Watch for signs like a dry mouth, crying without tears, unusual sleepiness or irritability, and reduced wet diapers. For babies, fewer than six wet diapers in a day, or a sunken soft spot on top of the head, are signals to call your pediatrician right away.
Kids may also take longer to regain their appetite and energy. A few days of picky eating or smaller meals after the stomach bug is normal and not a cause for worry as long as they’re drinking fluids and urinating regularly.
Signs That Something Isn’t Right
The stomach bug is miserable but self-limiting for most people. There are a few situations where it crosses from “ride it out” to “get medical help”:
- Can’t keep liquids down for 24 hours. This is the most common reason adults need medical attention. Dehydration from a stomach bug can escalate quickly.
- Vomiting or diarrhea lasting more than two days without any improvement.
- Blood in your vomit or stool.
- Fever above 104°F (40°C). For children, the threshold is lower: 102°F (38.9°C) or higher.
- Signs of dehydration: very dark urine, little or no urination, extreme thirst, dizziness, or feeling faint when standing.
Older adults, people with weakened immune systems, and very young children are at the highest risk for complications. For these groups, the illness can occasionally last longer than three days and fluid replacement through an IV may be necessary.
How to Get Through It Faster
There’s no antiviral treatment for norovirus. The illness runs its course on its own. What you can control is how well you manage hydration, which is the single biggest factor in how quickly you bounce back.
Sip small amounts of water, oral rehydration solutions, or clear broth frequently rather than gulping large amounts at once. If vomiting is severe, waiting 15 to 30 minutes between small sips gives your stomach time to absorb the fluid. Avoid caffeine, alcohol, and sugary drinks, which can worsen diarrhea. Once you can keep liquids down reliably, start introducing small amounts of bland solid food.
Rest matters too. Your body is fighting off the virus and repairing your gut lining simultaneously. Most people feel noticeably better after one solid night of sleep following the worst day of symptoms. Plan for about a week before you feel fully like yourself again, even though the acute misery ends much sooner.