Because the affected areas are either on hillsides or offshore (in the case of Little Liuchiu), it is difficult to get water. Therefore households often keep containers large and small filled with water, which become ideal locations for mosquito breeding.
由於地處離島或山坡地，當地居民取水不易，家家戶戶都擺放著大大小小的儲水容器，成了蚊子孳生的淵藪。