Shrimp and Crab May Carry a Mysterious Virus That Can Cause Blindness — No Cure Yet, Experts Reveal 4 Ways to Prevent It

Seafood such as shrimp and crab are popular for their rich nutritional value and delicious taste. However, health experts warn that these foods may also carry certain harmful pathogens, including a little-known virus that can seriously affect human health—even leading to vision loss in severe cases.

A Hidden Risk from Seafood

According to medical experts, shrimp and crab can sometimes be contaminated with parasites, bacteria, or viruses if they are not handled or cooked properly. Among these threats is a dangerous microorganism that can enter the human body through improperly prepared seafood.

Once inside, it may affect various organs, including the eyes. In rare but serious cases, infection can lead to severe complications such as inflammation, tissue damage, and even blindness.

What makes this virus particularly concerning is that there is currently no specific cure once the infection becomes severe.

How Infection Happens

The primary cause of infection is consuming raw or undercooked seafood. Dishes such as raw shrimp, marinated crab, or lightly cooked seafood increase the risk significantly.

In addition, poor hygiene during food preparation—such as cross-contamination between raw and cooked foods—can also allow harmful pathogens to spread.

People with weakened immune systems are especially vulnerable to complications.

Warning Signs to Watch For

After infection, symptoms may not appear immediately, making it difficult to detect early. However, some warning signs include:

• Eye pain or redness
• Blurred vision or sensitivity to light
• Persistent headaches
• Signs of infection such as fever or fatigue

If left untreated, the condition may worsen and potentially lead to permanent damage.

No Specific Cure — Prevention Is Key

Doctors emphasize that prevention is currently the most effective way to protect yourself. Once the virus causes severe damage, treatment options are limited and may not fully restore vision.

4 Ways to Protect Yourself

Experts recommend the following precautions:

1. Always Cook Seafood Thoroughly

Ensure shrimp, crab, and other seafood are fully cooked at high temperatures to eliminate harmful microorganisms.

2. Avoid Raw or Undercooked Dishes

Limit consumption of raw seafood dishes, especially those that are not prepared under strict hygiene standards.

3. Maintain Proper Food Hygiene

Wash hands, utensils, and surfaces carefully when handling seafood to prevent cross-contamination.

4. Choose Fresh and Reliable Sources

Buy seafood from trusted suppliers to reduce the risk of contamination.

The Bottom Line

While shrimp and crab remain nutritious foods, improper preparation can pose serious health risks. With no specific cure for certain infections, taking preventive measures is essential.

Being cautious about how seafood is prepared and consumed can help protect not only your general health but also your eyesight.