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Prevention of food poisoning due to anisakis
Last Updated October 9, 2024
What is Anisakis?
Anisakis is a translucent white parasite of about 2-3 cm, which is parasitic on mackerel, sardine, saury, bonito, squid, etc.
Anisakis insect body
Anisakis, parasitic on mackerel muscles
Anisakis parasitic on the internal organs of mackerel
Symptoms of food poisoning due to anisakis
After eating sashimi or shimesaba with anisakis, several hours to more than a dozen hours later, it may cause severe elephant pain or nausea. In addition, some people may have symptoms such as itching and rash due to allergic reactions.
Points to prevent Anisakis food poisoning
- Choose fresh seafood and remove internal organs quickly.
- Frozen processing (-20°C, 24 hours or more) and heating
- Check it visually to remove anisakis.
Be careful! Anisakis does not die in vinegar, wasabi, soy sauce, etc.
Anisakis does not die with vinegar, wasabi, soy sauce, etc., which is used in ordinary dishes.
Frozen treatment (-20 ° C, 24 hours or more) and cooking are effective to prevent food poisoning.
Test results about city distribution products
At the authentic Food Sanitation Laboratory, we surveyed the parasitic status of Anisakis on seafood distributed in Yokohama City.
| Survey month | Fish common name | Number of inspected fish | Number of detected fish | Number of vessels detected | Number of vessels detected by site | ||
|---|---|---|---|---|---|---|---|
| Internal organs | Ventral muscles | Back muscles | |||||
| April, 2024 | Masaba | 5 | 5 | 76 | 59 | 17 | 0 |
Horse mackerel | 5 | 0 | 0 | 0 | 0 | 0 | |
| May, 2024 | Sesame saba | 5 | 3 | 13 | 13 | 0 | 0 |
| Masaba | 5 | 5 | 448 | 174 | 266 | 8 | |
| June, 2024 | Sesame saba | 5 | 5 | 24 | 23 | 1 | 0 |
| Horse mackerel | 5 | 2 | 2 | 2 | 0 | 0 | |
| July, 2024 | Horse mackerel | 5 | 1 | 1 | 1 | 0 | 0 |
| Sesame saba | 5 | 1 | 1 | 1 | 0 | 0 | |
| August, 2024 | Sesame saba | 5 | 3 | 10 | 8 | 2 | 0 |
| Masaba | 5 | 5 | 241 | 155 | 81 | 5 | |
| September, 2024 | Horse mackerel | 5 | 0 | 0 | 0 | 0 | 0 |
| Masaba | 5 | 5 | 153 | 129 | 24 | 0 | |
Anisakis test site
Past test results
Detection status of Anisakis in 2023 (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 all of you, restaurants, retailers, cooking facilities, and lunch facilities that handle fresh fishers (Ministry of Health, Labour and Welfare) (PDF: 242KB)
- Fact sheet for anisakis disease (Food Safety Commission) (PDF: 852KB)
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Inquiries to this page
Food and Hygiene Division, Medical Care Bureau Health and Safety Department
Telephone: 045-671-2460
Telephone: 045-671-2460
Fax: 045-550-3587
Email address: ir-syokuhineisei@city.yokohama.lg.jp
Page ID: 409-199-566
