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===Introduction===
===Introduction===
''Haemonchus contortus'' is a nematode parasite from the family '''Trichostrongyloidea.''' It is found worldwide, and is an extremely important parasite of sheep and goats, particularly in tropical/ subtropical regions.
''Haemonchus contortus'' is a nematode parasite from the family [[:Category:Trichostrongyloidea|'''Trichostrongyloidea.''']] It is found worldwide, and is an extremely important parasite of sheep and goats, particularly in tropical/ subtropical regions.
Within the UK, it is found most commonly in the South, where the climate tends to be a little warmer and drier. Some have shown complete resistance to current anthelmintics which is posing a real problem, making sheep and goat farming extremely difficult in some areas of the country.
Within the UK, it is found most commonly in the South, where the climate tends to be a little warmer and drier. Some have shown complete resistance to current anthelmintics which is posing a real problem, making sheep and goat farming extremely difficult in some areas of the country.