食中毒往往来得很突然。有人在吃完饭几小时后出现恶心、呕吐、腹痛和腹泻，也有人直到第二天才开始发热或全身乏力。症状轻时，人们常以为只是肠胃不舒服，忍一忍就过去了；但如果呕吐、腹泻频繁，身体可能在短时间内失去大量水分和电解质，尤其对儿童、老年人

The Canadian Food Inspection Agency, commonly known as CFIA, is one of the public bodies responsible for protecting the