What happens when an old virus makes a new appearance? In this episode, we explore the legacy and resurgence of Infectious Salmon Anemia (ISA)—a disease that has shaped the global salmon industry for decades. With recent outbreaks reported in Northern Norway, we dive into what ISA is, how it spreads, and what history can teach us from past crises in Canada, Chile, Scotland, and the Faroe Islands. You’ll learn how modern tools like genetic sequencing, DNA vaccines, and strict biosecurity protocols are helping farms fight back—and what today’s uptick in cases might signal for the industry’s future. 

For more aquaculture insights head to our Fish n’ Bits blog.