There have been 22 cases of gastroenteritis since the Christchurch earthquake.
The Canterbury District Health Board says that number is expected to rise.
Medical officer of health Dr Ramon Pink says the good news is that none of these cases is related to one another.
He says the thing we
Christchurch earthquake: Stomach flu cases rise
Symptoms - typically stomach cramps, vomiting, diarrhoea and fever - range from mild to serious. Photo / Thinkstock
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