In Papua New Guinea, the infection occurs mainly in relation to the Sepik and Kumusi rivers; in the latter areas, the disease is known as the "Kumusi ulcer".[8] The disease occurred after flooding and devastation, which followed the eruption of Mount Lamington in 1951. Reid described how older people living in the villages blamed the volcano for the disease.[8] The recent outbreak of the disease on Philip Island, Victoria,[9] was initially associated with the building of a roadway, inadvertently forming marshlands at the headwaters of an estuary, which was divided by the construction. Again in Australia, the increase in the number of cases between 1991 and 1994 in Victoria was associated with the use of recycled waste-water to irrigate a golf course.