Concerns About Seafood-Related Infections: What You Need to Know

Possible infection

Hello, Doctor Hong.
While having seafood udon for dinner, I accidentally got pricked or scraped while peeling shrimp for my brother.
Although there was no bleeding, I am concerned about the possibility of infection from any marine bacteria.
I remember hearing about some frightening bacteria before, but I didn't want to worry my grandmother, so I just applied iodine and tetracycline ointment myself.
I would like to ask what the symptoms of such infections would be.
Additionally, since the shrimp was cooked, is it safer? I'm a bit worried and didn't know who to ask, so I hope you can help me with my questions.
Thank you!

Do, 20~29 year old female. Ask Date: 2020/06/07

Dr. Hong Yuanbin reply Internal Medicine

Hello, what you are concerned about is likely necrotizing fasciitis caused by Vibrio species.
The symptoms typically start with redness, swelling, heat, and pain at the wound site, followed by fever, and can spread very rapidly.
This may progress to chills, purplish discoloration of the wound, and hemorrhagic blisters.
Based on your description, it seems you do not have such an infection.
Additionally, the risk of infection from cooked seafood is indeed very low, so simply applying iodine and tetracycline ointment to the wound should suffice.
You should seek medical attention only if you develop a fever or if the wound becomes uncomfortable.
Thank you for your inquiry.

Reply Date: 2020/06/07

More Info

When it comes to concerns about seafood-related infections, particularly regarding injuries sustained while handling seafood, it's important to understand the risks and the nature of the bacteria involved. In your case, you mentioned being pricked or scratched by a shrimp while preparing seafood udon noodles. Although you did not experience bleeding, it is natural to worry about potential infections, especially from bacteria commonly associated with seafood.

The primary bacteria of concern in seafood are Vibrio species, which include Vibrio cholerae, Vibrio parahaemolyticus, and Vibrio vulnificus. Each of these bacteria can cause different types of infections, and understanding their transmission routes and symptoms can help alleviate your concerns.

1. Vibrio cholerae is primarily associated with cholera, which is transmitted through contaminated water or food, particularly in areas with poor sanitation. Symptoms include severe watery diarrhea, vomiting, and dehydration. However, it is less likely to be a concern in your situation since you were handling cooked shrimp.

2. Vibrio parahaemolyticus is often linked to gastroenteritis and is commonly found in raw or undercooked seafood. Symptoms include nausea, vomiting, diarrhea, and abdominal cramps. Again, since the shrimp was cooked, the risk of infection from this bacterium is significantly reduced.

3. Vibrio vulnificus is particularly concerning as it can cause wound infections if the bacteria enter through cuts or abrasions, especially in individuals with underlying health conditions such as liver disease. Symptoms of a wound infection may include redness, swelling, and pain at the site of injury, and in severe cases, it can lead to systemic infections.

Given that you were handling cooked shrimp, the risk of contracting any of these infections is quite low. Cooking seafood at high temperatures effectively kills most harmful bacteria, including Vibrio species. Therefore, as long as the shrimp was properly cooked, the likelihood of infection from handling it is minimal.

In terms of symptoms to watch for, if you were to develop any signs of infection, such as increased redness, swelling, or pus at the site of the scratch, or if you experience systemic symptoms like fever, chills, or gastrointestinal distress, it would be advisable to seek medical attention promptly.
Using antiseptics like iodine and applying topical antibiotics like tetracycline ointment is a good practice for minor cuts and scrapes to prevent infection. However, if you notice any concerning symptoms, do not hesitate to consult a healthcare professional.

In summary, while it's understandable to be concerned about potential infections from seafood handling, the risk is significantly reduced if the seafood is cooked properly. Monitoring for any unusual symptoms and maintaining good hygiene practices will help ensure your safety. If you have any further concerns or if symptoms develop, please reach out to a healthcare provider for personalized advice.

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