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- About prevention of food poisoning by anisakis
Here's the text.
About prevention of food poisoning by anisakis
Last update date July 1, 2024
What is Anisakis?
Anisakis is a translucent white parasite of about 2-3 cm, and parasites on mackerel, sardines, saury, bonito, squid, etc.
Anisakis insect body
Anisakis parasitic infested mackerel muscles
Anisakis parasitic on the internal organs of mackerel
Symptoms of food poisoning caused by anisakis
After eating sashimi or shimesaba with anisakis, it may cause severe groin pain and nausea may occur several hours to ten hours later. In some people, symptoms such as itching and rash due to allergic reactions may appear.
Points to prevent anisakis food poisoning
- Choose fresh seafood and remove internal organs quickly.
- Refrigeration processing (-20°C, 24 hours or more) and heating
- Check carefully visually to remove anisakis.
Be careful! Anisakis does not die with vinegar, wasabi, soy sauce, etc.
Anisakis does not die with vinegar, wasabi, soy sauce, etc., which is used in normal cooking.
To prevent food poisoning, freezing treatment (-20°C, 24 hours or more) and cooking are effective.
Test results for city distribution products
At the home food hygiene inspection station, we surveyed the parasitic status of Anisakis for seafood distributed in Yokohama City.
| Survey month | Fish common name | Tested number of fish | Number of fish detected | Number of vessels detected | Number of vessels detected by site | ||
|---|---|---|---|---|---|---|---|
| Internal organs | Abdominal muscles | Back muscles | |||||
| April, 2024 | Masaba | 5 | 5 | 76 | 59 | 17 | 0 |
Marad | 5 | 0 | 0 | 0 | 0 | 0 | |
| May, 2024 | Sesame saba | 5 | 3 | 13 | 13 | 0 | 0 |
| Masaba | 5 | 5 | 448 | 174 | 266 | 8 | |
Anisakis test site
Past test results
Detection status of Anisakis in FY2023 (PDF: 158KB)
Detection status of Anisakis in FY2022 (PDF: 152KB)
Related information
- Let's prevent food poisoning due to Anisakis (Ministry of Health, Labour and Welfare) (outside site)
- To restaurants, shops, cooking facilities, catering facilities, etc. that handle fresh seafood (Ministry of Health, Labour and Welfare) (PDF: 242KB)
- Fact Sheet for Anisakis Disease (Food Safety Commission) (PDF: 852KB)
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For inquiries to this page
Food hygiene section, Medical Care Bureau Health and Safety Department
Phone: 045-671-2460
Phone: 045-671-2460
Fax: 045-550-3587
Email address: ir-syokuhineisei@city.yokohama.jp
Page ID: 409-199-566
