Mount Isa Central State School will reopen Wednesday after an outbreak of gastroenteritis.
Queensland Health closed the school on Monday and Tuesday after the outbreak and there were fears it could extend further.
However Queensland Health said Tuesday afternoon the school would re-open tomorrow (Wednesday).
"The closure was only temporary to de-escalate the large growth in number of cases and to re-emphasise how important exclusion is (for 48 hours after last symptoms)," a Queensland Health spokesperson said.
Queensland Health has issued the directive to close on Monday 13 September and Tuesday 14 September after an outbreak of a gastro virus which had spread between students and their families.
The school was closed for deep cleaning.
"Gastro viruses are spread through unwashed hands, air droplets from vomiting, or if tiny amounts get into shared or uncooked food," Queensland Health said in an earlier statement.
"We think it will take longer to get this outbreak under control. In the short term we support a brief school closure to try and limit the risk to students and reduce ongoing transmission."
Gastro is a common and often highly infectious condition that affects the stomach and intestines and can cause vomiting and diarrhoea.
Gastroenteritis is treated by drinking fluids, and doesn't usually require medication.
Babies under 6 months should always be seen by a doctor if they have gastro.
Reduce your risk of catching or spreading gastro by washing your hands well after using the bathroom, changing nappies or handling food.
Children should not return to school and adults should not return to work until 48 hours after the last episode of diarrhoea or vomiting.
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