It is certain that there will be parasites in any living thing.

Whether raw oysters are hygienic depends on the sea area.

First-class sea area: oysters can be eaten raw

Second-class sea area: suitable for cooked food

Third-class sea area: suitable for swimming

Fourth-class sea area: not suitable for swimming, only for docks

China's sea area management is relatively loose and weak, and the European Union has also promulgated 368 regulations prohibiting the import of oysters from China, so raw oysters are not recommended in China.

what are the pathogenic bacteria in oysters, fish, shrimps and crabs?

Vibrio parahaemolyticus (Vibrio enteritidis) is a food-borne pathogen, which is mostly distributed in estuaries, inshore seawater and its sediments. Many aquatic products contain Vibrio parahaemolyticus, such as cod, sardines, meretrix meretrix, octopus, shrimp, crab, lobster, crayfish, scallops and oysters.

Salmonella is considered as one of the most important food-borne pathogens in the world. Many foods such as meat (especially poultry), eggs and egg products, unpasteurized milk and dairy products are related to Salmonella. In recent years, Salmonella has been detected in rainbow trout, tilapia, Atlantic salmon and other fish and shellfish, and even on the surface of water.

The International Committee on Food Microbiological Standards believes that the contamination of aquatic products by Vibrio parahaemolyticus does not necessarily lead to foodborne diseases, and only when the contamination of Vibrio parahaemolyticus reaches a certain level will the probability of foodborne diseases increase. The standard limit of Vibrio parahaemolyticus is different in different countries. Due to the strong pathogenicity of Salmonella, it is generally required that it should not be detected in ready-to-eat food internationally.

Therefore, for seafood such as oysters, it is necessary to strictly control the source pollution of aquatic products and ensure the sanitation of the culture environment; Preventing the source pollution of aquatic products is the key link to ensure the quality and safety of aquatic products; Strengthen the supervision of aquatic products market and strengthen the quality control of shellfish products; Improve consumers' awareness of the safety of aquatic products and improve the way of eating. Consumers should try to reduce raw aquatic products, and when purchasing aquatic products, they should purchase and keep vouchers through formal and reliable channels.

The best way to eat oysters: garlic oysters, oyster soup, steamed oysters, oyster baked with eggs, oyster fried eggs, fried oyster cakes, etc.