''Haemonchus contortus'' is by far currently the most prevalent species under the ''Haemonchus'' genus, and seen commonly within the UK. The other two are of importance within the UK, but to a lesser extent. | ''Haemonchus contortus'' is by far currently the most prevalent species under the ''Haemonchus'' genus, and seen commonly within the UK. The other two are of importance within the UK, but to a lesser extent. |