Spirometra erinaceieuropaei is a tapeworm that infects domestic animals and humans. In humans infection is called sparganosis. The worm has an interesting lifecycle. The adult worm is present in the small intestine of cats and dogs where it may grow as long as 1.5 metres. Eggs from the worm are passed with the host feces, when they develop into a procercoid larva. This larva may be directly ingested by humans or may enter an intermediate host which include frogs, birds, snakes, rats and mice and become a plerocercoid larva. When cats, dogs, foxes or wolves eat the intermediate host the worm completes its life cycle becoming an egg producing adult. Because humans would normally ingest the worm at the procercoid stage and are not usually eaten by cats and dogs, the human is a dead-end host.
In 2014 British man was found to have been infected by the tapeworm from an unknown cause (possibly a traditional frog meat poultice) while in China. The parasitic worm was recorded on successive MRI scans of his brain, moving location by about 5 cm before doctors realized it was alive. The 50-year old first visited doctors in 2008 suffering from headaches, seizures, memory loss, and complaining that his sense of smell had changed. The 10-cm ribbon-shaped larval worm was removed during a surgical procedure and the man recovered.
The genome of S. erinaceieuropaei recovered from the patient's brain was sequenced in 2014 and is available through the WormBase ParaSite website.
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Tapeworm in brain - Tapeworm lived in a man's brain for four years before being removed by scientists. The 50-year-old man, visited doctors in 2008 suffering from headaches, seizures, memory...
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Parasitic tapeworm burrows its way through a man's brain for four years.
This series of brain scans shows the path a tiny parasitic tapeworm takes as it burrows its way through a man's brain In the first case of its kind in Britain, the one centimetre long worm...
Thu, 20 Nov 2014 16:06:43 -0800
Genetic sequencing identified it as Spirometra erinaceieuropaei, a rare species of tapeworm found in China, South Korea, Japan and Thailand. Just 300 human infections have been reported since 1953, and not all of them in the brain. The parasite starts ...
Tue, 20 Jan 2015 06:33:51 -0800
The patient, who was of Chinese descent, had recently visited China, which along with South Korea, Japan and Thailand, has more regular occurrences of the parasite known as Spirometra erinaceieuropaei. Four years earlier the man had first experienced ...
Fri, 21 Nov 2014 13:38:50 -0800
The worm, which is called Spirometra erinaceieuropaei, is extremely rare, and can cause seizures and memory loss. Cases have typically popped up in the East, potentially caused by small infected shelfish, raw reptile or frog meat. The 1-centimeter-long ...
Thu, 26 Mar 2015 02:43:06 -0700
Ma come ha fatto il verme a finire nel cervello di Yin Meng? cina-verme-8-cm-cervello-yin-meng. Quello nella testa di Yin Meng non era un verme comune. Si tratta del rarissimo Spirometra erinaceieuropaei, un parassita che nell'uomo causa la sparganosis ...
Fri, 23 Jan 2015 04:36:05 -0800
But as the worm moved over the years, the symptoms changed. In 2013, doctors finally made the horrifying discovery: They diagnosed him with Sparganosis, which is a parasitic infection caused by the tapeworm Spirometra erinaceieuropaei. "It had moved ...
Mon, 24 Nov 2014 15:21:23 -0800
And researchers sequenced the centimeter-long worm upon its extraction to find that it had a genome 10 times larger than any other tapeworm sequenced—a fact that may account for Spirometra erinaceieuropaei's ability to infect numerous hosts. “Humans ...
Medical News Today
Wed, 26 Nov 2014 09:35:24 -0800
Tapeworms usually infect the gut, causing symptoms such as weakness, weight loss and abdominal pain. But the larvae of some species can reach the eyes, brain and spinal cord. The species in this case, Spirometra erinaceieuropaei, is one such parasite.
Sun, 23 Nov 2014 20:22:51 -0800
After diagnosis, surgeons removed the tapeworm, identified to be of the rare species Spirometra erinaceieuropaei, using drugs. The man has now completely recovered, The Telegraph noted. This is the first case of such parasite in the UK. It has occurred ...
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