가령 재선충병은 그간 감염 후 3∼6개월이 지난 후에 잎의 처짐, 갈변 등 외형적 징후를 통해 감염 유무가 확인됐다.
For example, Infection status of pine wilt disease has been confirmed three to six months after infection through external signs such as drooping leaves and browning.