这是什么？
Gastroenteritis (gastro) is a common condition which affects the gut. Symptoms include vomiting, diarrhoea, stomach pain and sickness. It is caused by an infection and often begins without warning.
It is not usually serious, but it can lead to dehydration. Gastro can usually be treated at home. In more serious cases, or for people who are young, old or who have a weakened immune system, a more serious illness may develop.