Food poisoning (viral)
More than 90% of cases of viral food poisoning are caused by the small round viruses, for example parvoviruses, as well as calicivirus.
Examples include:
- hepatitis A from shellfish, e.g. Irish mussels
- small round viruses from cockles
Generally there is an incubation of about 36 hours after which there is a rapid onset of vomiting, diarrhoea and abdominal cramps, although the first two features are absent in 50% and 25% respectively. Illness lasts for one or two days, after which there is a rapid recovery.
Reference:
- American Medical Association, American Nurses Association/American Nurses Foundation, Centers for Disease Control and Prevention, et al. Diagnosis and management of foodborne illnesses: a primer for physicians and other health care professionals. MMWR Recomm Rep. 2004 Apr 16;53(RR-4):1-33.
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