Outlaw Yogi wrote:freediver wrote:The risk of parasitic infection depends on how closely related or how similar the biology of the animal is. That is why pig is so dangerous and must be thoroughly cooked (and why so many religions ban it), whereas fish can be safely eaten raw, if it is fresh.
According to Qld Dept of Primary Industries and Fisheries, it is unsafe to eat
Ciguatera infected fish raw or cooked, as cooking does not kill the toxins produced by the parasite, and Ciguatera infected fish are quite common.
On the topic of eating raw fish per se, and the plethora of fish parasites in existence, the wiki reckons ...
http://en.wikipedia.org/wiki/Fish_disea ... g_raw_fish
Though not a health concern in thoroughly cooked fish, parasites are a concern when human consumers eat raw or lightly preserved fish such as sashimi, sushi, ceviche, and gravlax. The popularity of such raw fish dishes makes it important for consumers to be aware of this risk. Raw fish should be frozen to an internal temperature of −20°C (−4°F) for at least 7 days to kill parasites. It is important to be aware that home freezers may not be cold enough to kill parasites.[42][43]
Fish diseases and parasites
http://en.wikipedia.org/wiki/Fish_disea ... _parasites
You left out the bit where they put it in perspective:
Traditionally, fish that live all or part of their lives in
fresh water were considered unsuitable for sashimi due to the possibility of parasites (see Sashimi article). Parasitic infections from freshwater fish are a serious problem in some parts of the world, particularly Southeast Asia. Fish that spend part of their life cycle in brackish or freshwater, like salmon are a particular problem. A study in Seattle, Washington showed that 100% of wild salmon had roundworm larvae capable of infecting people. In the same study farm raised salmon did not have any roundworm larvae.[44]
Parasite infection by raw fish is
rare in the developed world (fewer than 40[37] cases per year in the U.S.), and involves mainly three kinds of parasites: Clonorchis sinensis (a trematode/fluke), Anisakis (a nematode/roundworm) and Diphyllobothrium (a cestode/tapeworm).[37] Infection risk of anisakis is particularly higher in fishes which may live in a river such as salmon (shake) in Salmonidae, mackerel (saba). Such parasite infections can generally be avoided by boiling, burning, preserving in salt or vinegar, or freezing overnight. Even Japanese people never eat raw salmon and ikura, and even if they seem raw, these foods are not raw but are frozen overnight to prevent infections from parasites, particularly anisakis.