Introduced alpine newts may themselves pose a threat to native amphibians if they carry disease. At least one introduced population in the United Kingdom was affected by chytridiomycosis.[2] In New Zealand, the species was declared an "unwanted organism" and eradication was recommended for the introduced subspecies I. a. Papuan because of the risk of spreading chytridiomycosis to endemic frogs, such as Archey's frog (Leiopelma archeyi) and Hochstetter's frog (L. hochstetteri)[22]