gastroenteritis (gastro)
by william samuels·
gastro is an infection of the gut caused by viruses (most commonly rotavirus and norovirus), bacteria, or parasites. it causes vomiting and diarrhoea and can lead to dehydration, especially in young children. most cases resolve within a few days.
contagious
yes
incubation
1–3 days (viral), 1–5 days (bacterial)
contagious for
while symptoms are present and for 48 hours after last episode
exclusion
exclude for 48 hours after last vomit or diarrhoea
symptoms
- •vomiting (often starts first)
- •watery diarrhoea
- •stomach cramps and pain
- •mild fever
- •loss of appetite
- •irritability and tiredness
when to see a doctor
see your GP or call 13 HEALTH (13 43 25 84) if:
- •your child is under 6 months old
- •signs of dehydration: no wet nappies for 6+ hours, dry mouth, no tears when crying, sunken eyes
- •blood or mucus in diarrhoea
- •vomiting for more than 24 hours
- •high fever (above 38.5°C in babies, 39°C in older children)
- •severe stomach pain
- •your child is very drowsy or hard to wake
in an emergency, call 000.
home treatment
- •keep up fluids — small, frequent sips (breast milk, formula, or water)
- •use oral rehydration solution (e.g. Hydralyte, Gastrolyte) for children showing signs of dehydration
- •return to normal diet as soon as they're ready — don't starve a gastro bug
- •avoid fruit juice, soft drinks, and sports drinks
- •give paracetamol for fever — avoid ibuprofen if dehydrated
- •wash hands thoroughly after nappy changes and before food
this guide is for informational purposes only and is not medical advice. if you are concerned about your child, see your GP, call 13 HEALTH (13 43 25 84), or in an emergency call 000.