In 2001, PWD wilt pines were found in Mokpo (Jeonnam
Province) and in Gumi (Gyongbook Province). The PWD-infected
forests in Mokpo and Gumi are located 245 km and 115 km from the
first infection site in Busan, respectively. The infected forest in Gumi
borders the Gyongbu highway. In 2003, PWD epidemics spread to
Sinan and Youngam in Jeonnam Province and to Chilgok in Gyongbook
Province. In Gyongbook Province, PWD wilt pines were newly
found in Pohang, Gyongju, Andong, Gyongsan, and Youngcheon
during 2004–2005. Almost all wilt pines fringed highways and
main provincial roads. In 2004, PWD wilt pines were found among
Japanese black pines (Pinus thunbergii Parlatore) stand near a golf
course on Jeju Island, the biggest island in Korea and famous for
tourism.