Do Garden Snails Carry Diseases?

do garden snails carry diseases

Garden snails, those small and slow creatures that often make an appearance in our backyard, can be quite fascinating. Their unique shells and leisurely pace make them a subject of curiosity for many. However, have you ever wondered if these seemingly harmless creatures can carry diseases? In this blog post, we will explore the topic of whether garden snails pose any health risks and if they can transmit diseases to humans.

Understanding Garden Snails

Garden snails, scientifically known as Helix aspersa, are commonly found in gardens, parks, and other outdoor spaces. They are part of a larger group of animals called gastropods, which also includes slugs. These creatures are herbivores, mainly feeding on plants, leaves, and fruits.

The Risk of Parasites

While garden snails themselves do not carry diseases, they can act as hosts for certain parasites that can be harmful to humans. One of the most well-known parasites associated with snails is the rat lungworm (Angiostrongylus cantonensis). This parasite can infect snails, slugs, and other animals, and it can be transmitted to humans if we consume raw or undercooked snails or vegetables contaminated with their slime.

When a person ingests the parasite, it can cause a condition known as eosinophilic meningitis, which affects the brain and spinal cord. Symptoms may include severe headaches, neck stiffness, nausea, and vomiting. In rare cases, it can lead to more severe complications.

Preventing Infection

To minimize the risk of infection from parasites carried by garden snails, it is important to take certain precautions:

  • Cook snails thoroughly: If you enjoy eating snails, ensure they are cooked properly to kill any potential parasites. It is best to follow established cooking guidelines or consult a trusted recipe.
  • Wash fruits and vegetables: Snails can leave behind their slime on produce, so it is essential to wash fruits and vegetables thoroughly before consuming them.
  • Avoid handling snails with bare hands: If you come into contact with snails, it is advisable to wear gloves or use a tool to handle them. This reduces the risk of accidentally ingesting their slime.
  • Keep your garden clean: Regularly remove snails and slugs from your garden to minimize the chances of encountering them.

Other Considerations

While the risk of contracting diseases from garden snails is relatively low, it is still important to be cautious, especially if you have young children or individuals with compromised immune systems in your household. These individuals may be more susceptible to infections.

It’s worth noting that garden snails are not the only carriers of parasites. Other animals, such as rodents and certain insects, can also transmit diseases. Therefore, practicing good hygiene, such as washing hands thoroughly after handling animals or being in outdoor environments, is always recommended.


In conclusion, garden snails themselves do not carry diseases, but they can act as hosts for parasites that can be harmful to humans. By taking simple precautions, such as cooking snails thoroughly and washing fruits and vegetables, you can minimize the risk of infection. Remember to always practice good hygiene and be mindful of individuals who may be more vulnerable to infections. So, the next time you come across a garden snail, you can appreciate its beauty while also being aware of the potential risks.


do garden snails carry diseases
do garden snails carry diseases

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