I think it's only the 2nd:

Scientists have long feared TR4’s introduction into the Americas. Still, Stuart Thompson explains for the Conversation, the infectious outbreak is not wholly unprecedented: During the mid-20th century, a related strain of Fusarium wilt destroyed plantations across Latin America, paving the way for a shift from the predominant “Gros Michel” banana variety to the “Cavendish” version commonly seen today.

source

Also, Fusarium is known as Panama Disease.