Can you get norovirus more than once in

Yes — norovirus can hit the same household more than once in a season, and the second illness does not have to be the same virus: there are many types, and the immunity you build up after one bout is short-lived and type-specific. I cannot tell you from a message what is making this person sick, and the second round may not even be norovirus. What helps tonight is breaking the loop in the kitchen, on surfaces, in the laundry, and in who cooks — not finding who brought it home.

1) What you already tried, and the version that actually moves the needle

2) Tonight's 25-minute reset (three blocks, in this order)

Block A — the kitchen handover (5 min)

• The sick person does not cook, handle food, or serve anyone. This applies to you too, whoever feels fine.
• Name one other adult for cooking for the next 48 hours; if that is you, then someone else takes the school run and the bathroom duty.
• Keep a "one person serves, one plate" rule for shared bowls and dips. No self-serve at this table for now.
• Food already at home that is gentle and easy: plain rice or congee, toast, banana, boiled potato, cooked eggs, clear soup, plain yogurt if they tolerate it.

Block B — bathroom and the sick-room (10 min)

• Gloves on. Wipe the area with paper towels, put the towels straight into a plastic bag, tie it.
• Disinfect with a chlorine bleach solution (CDC: 1,000–5,000 ppm, i.e. 5–25 tablespoons of 5–8% household bleach per gallon of water — or an EPA-registered product listing norovirus). Leave it on the surface at least 5 minutes.
• Then clean the whole area again with soap and hot water. Do not stop at the disinfectant step.
• Toilet seat, handle, flush button, taps, door handle, light switch: same treatment.
• Laundry: gloves, never shake it out, detergent and hot water on the longest cycle, dryer on the hottest setting. Do not shake soiled bedding into the air.

Block C — the whole-home touch-up (10 min)

• Door handles, taps, fridge handle, microwave and stove knobs, light switches, remotes, phones, laptops, and every school bag, shoe, cup and lunch box in the house.
• Take the bin out; wash hands with soap after handling it.
• Everyone washes hands again at the end of the reset. The person cleaning is the last one to touch the tap.

3) Kitchen and food rules for the next 48 hours

• Do not taste food to check if it is safe — contaminated food can look, smell and taste normal.
• Throw away anything that may have been handled by the sick person, and anything served communally that they touched.
• Cook thoroughly and skip raw or undercooked food, raw shellfish and oysters, and quick-steamed items. Norovirus survives normal steaming and reheating.
• Wash fruit and vegetables well before eating.
• The sick person does not prepare food for others until at least 48 hours after symptoms stop.
• Fluids: if you already have prepared oral rehydration solution at home, offer small sips they can keep down, and keep breast milk and usual food going. Do not improvise a salt-and-sugar recipe. Do not use plain water, juice, soft drinks or sports drinks as the replacement fluid for a child who is losing fluid — those can make the electrolyte disturbance worse.
• No anti-diarrhoeal medicine for infants or young children. No leftover antibiotics, no someone else's anti-sickness tablets, no leftover anti-motility tablets if there is fever or blood in the stool.

4) The decision tree — keep this on the fridge

```
Someone in the house is vomiting / has diarrhoea
│
├─ ANY red flag below? → call your local emergency number now / go now
│ • sleepy, hard to wake, sunken eyes
│ • cold hands and feet, pale or blotchy skin
│ • almost no urine / no wet nappies
│ • green (dark) vomit
│ • swollen or hard belly
│ • blood in the stool, or pale with tiny red spots
│ • severe headache, stiff neck, or not making sense
│ • baby under 6 months vomiting
│ • pregnant and nothing stays down
│ • older adult newly confused or unusually sleepy ← act now, do not wait for fever
│
├─ No red flag, BUT cannot keep fluids down / drinking poorly /
│ getting worse / blood in stool / fever / diarrhoea for many days /
│ night-time diarrhoea / weight loss / recent antibiotics
│ → clinician or urgent care TODAY
│
└─ Otherwise well → home care above, and check on them:
• before bed tonight
• every few hours while awake tomorrow
Watch: are they drinking? are they urinating? alert? soft belly?
Not green, not bloody. (Count wet nappies for a baby; count urine for an elder.)
```

Checkpoints are for deciding to escalate, not for deciding to relax at home.

5) Red flags: when to stop DIY and get help

These are the lines from the vomiting-and-diarrhoea guidance that should move you off home care and onto a phone call:

• Call emergency services now: any of the red-flag list above. The cold, mottled, sleepy, almost-no-urine picture is shock, not "a tummy bug".
• Same-day clinician: unable to drink or breastfeed, blood in the stool, becoming sicker while you watch, diarrhoea with fever, diarrhoea lasting many days, waking at night to pass stool, losing weight, or antibiotics in the last weeks. The very old need testing rather than home observation.
• Also for the elder nearby: diarrhoea plus new confusion can be dehydration or blood infection. Do not wait for a high fever, and do not wait to see if it settles overnight.

6) Scripts you can screenshot and send

To the household (tonight, before anyone accuses anyone):
> Anyone can bring this in — this isn't a blame question. Three things from tonight: whoever is sick stays out of the kitchen for two days after symptoms stop and someone else cooks; soap and water before food and after the toilet, sanitizer as an extra only; gloves and bleach for bathroom cleanup. We're not hunting for a source, we're breaking the loop.

To the school (if a sibling is the one sick):
> [Name] started vomiting / having diarrhoea [day]. They are staying home today. They will stay home for at least 48 hours after symptoms stop, and we will keep watching the rest of the family for a few days. Please let us know if you hear of anything similar in the class.

To the older relative or neighbour nearby:
> We have had a stomach bug in the house, so we are not visiting and not bringing food over — no contact, so nobody catches it. Are you having any vomiting, diarrhoea or appetite loss? If so, please contact your doctor rather than waiting it out.

Before you call: start a fresh copy of the one-page diarrhoea sheet you used last time — new dates, new counts, and write "no new medicine" on it. Then have ready:
> Who is sick and their age. When it started. Number and times of vomits and stools. Blood or mucus? Colour of the vomit. Last urine / last wet nappy. Fever? Belly pain, and constant or in waves. Any antibiotics recently, any sick contacts, any undercooked food or shellfish. What they have kept down. Weight if you know it. What I need to know: what would make us come straight back, and what must we not give at home.

Division of labour for this week (so you are not the only one holding it):
> Cooking: [name]. School pickup: [name]. Bathroom duty: [name]. School and family messages: [name]. Kitchen handover and clean-down: [name].

7) What success looks like in 24 hours

Success is not "the house is germ-free" and it is not a promise that nobody gets sick. Concretely, by tomorrow evening you want:

• no new person sick in the house;
• the sick person still keeping fluids down and still passing urine / wet nappies;
• nobody needing the emergency door;
• someone other than the sick person cooking, and the kitchen handed back only 48 hours after symptoms stop;
• surfaces, laundry, bin and school bags done once, not repeatedly;
• a name against each job above, so you are carrying decisions, not the whole week.

If the vomiting and diarrhoea are still going after 48 hours, or fluids still cannot be kept down, or the person looks worse — that is the clinician door, not another night of home care. And if you tell me which country and city you are in, I can point you at the exact local clinic and urgent-care doors to have ready.

(Home-care and cleaning steps here follow CDC norovirus prevention guidance, checked 28 October 2026, and standard home-care guidance for vomiting and diarrhoea. This is not a diagnosis and involves no medication changes.)