Researchers at the University of Helsinki have reported the first case of the earthworm parasite Linguatula serrata found in dogs in Finland. A zoonotic parasite commonly known as a “tongue mat” can grow up to 8 percent in the host’s body and can also infect humans.

According to a university press release, the parasite was found in a dog that had been brought to Finland from Spain about a year ago. The owner noticed a three-centimeter-long worm-like organism after the dog had coughed it on the floor.

The owner sent a stool and dog stool sample to the vet, who reported the discovery to the University of Helsinki. The results of a DNA test performed at the University of Eastern Finland confirmed that it was a Linguatula serrata infection.

Although parasites are called tongue worms, they are crustaceans that live in the nasal cavities and buccal cavities of dogs and sometimes cats (or other carnivorous mammals such as foxes), causing upper respiratory symptoms.

Animals are usually infected with Linguatula serrata after eating the organs of intermediate herbivores such as cattle. Humans can become infected with the parasite if they eat raw meat or are exposed to dog feces contaminated with Linguatula serratan eggs.

Parasites are most commonly found in areas with warm or subtropical climates, such as Africa and Asia. Treatment of a dog’s infection usually involves antibiotics, surgery, or a nasal rinse.

Tahira Sequeira

Helsinki Times