Scientists examine position of snails in parasites that pose public well being risk

Researchers have elevated data of the lifecycle of some parasites by finding out snails in Thailand. These parasites may cause extreme infections in people who eat uncooked or improperly cooked fish which have consumed contaminated snails.

Parasitic flatworms have been discovered to make use of a number of species of thiarid snails, generally present in freshwater environments in Southeast Asia, as their first intermediate host.

“Trematode infections are main public well being issues affecting people in Southeast Asia. Trematode infections rely not solely on the behavior of individuals, but additionally on the presence of first and second intermediate host species, ensuing within the endemic unfold of parasites, equivalent to intestinal and liver flukes in Thailand,” mentioned scientists.

Snails belong to the genus Stenomelania, have elongated and pointed shells and might be discovered close to and within the brackish water surroundings of estuaries from India to the Western Pacific islands, together with Hawaii.

Learning snails to know the dimensions of downside
The examine, performed by Thai and German researchers, was printed within the journal Zoosystematics and Evolution.

Researchers collected 1,551 Stenomelania snails between February 2018 and 2019, recognized as 4 species, from streams and rivers close to the shoreline of the south of Thailand in Krabi, Trang and Satun Provinces. Ten have been contaminated with trematodes. The parasites have been discovered at seven of the 13 studied areas and belonged to 3 completely different species. In Krabi Province, the crew discovered all three species.

Scientists suspect their presence could possibly be associated to the circulation of sea currents, because the movement of water alongside the Andaman coast is affected by the monsoon season between January and Could and August and October.

Earlier analysis has discovered no less than 70 species of foodborne and waterborne trematodes, equivalent to blood, intestinal, liver and lung flukes, might be present in numerous animals.

The Meals and Agriculture Group of the United Nations (FAO) produced factsheets in 2020 on foodborne parasitic infections equivalent to paragonimiasis, taeniasis and cysticercosis, cystic and alveolar echinococcosis, clonorchiasis and opisthorchiasis and fish liver flukes.

Researchers mentioned data on the susceptibility of Stenomelania snails to foodborne zoonotic infections supplies data on public well being within the area.

They added additional examine of the snails will improve understanding of the host-parasite relationship as the primary intermediate host populations in Thailand. This may also decide the position of parasitic infections in people and animals in Southeast Asia.

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