The global Covid-19 pandemic has changed life as we once knew it, creating wave upon wave of disruptions and uncertainty. A pandemic-scale, highly contagious virus has not been experienced in our lifetimes. However, the notion that viruses can cause debilitating post-infectious conditions is not new. Long Covid is the term coined by a patient-led movement in May 2020 following the realisation that many people were in fact not recovering from their SARS-CoV-2 infection – a movement that was created when it seemed no one was listening. That was everyone except the millions worldwide who were already living with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) – the most common, yet still poorly understood, post-viral condition. It has taken a pandemic-scale virus for many to finally take a largely neglected area of research and medicine seriously. There is still much we don’t understand about how viruses affect our long-term health – so what has this pandemic taught us that desperately needs attention?