Fusarium wilt was first spotted on on Cavendish cultivars in 1967, trace 1, in Taiwan, but became wider known since. TR4 kills plants by disrupting their vascular system, preventing growth, and it can last for decades. Fungicides don't kill it.
The disease has been reported in the La Guajira region of the country but they are expanding control efforts country-wide. Efforts will include disinfecting machinery, shipping containers, and footwear in quarantined areas.
Crises often spur innovation. The first commercial plant GMO came about when the papaya in Hawaii was similarly being devastated by nature and land use techniques and chemicals could not stop it. But biology did, and the crop rebounded nicely.