The mystery of COVID-19 long haulers' months-long symptoms

Months after testing negative, thousands of patients around the world — known as ‘long haulers — continue to face serious and often mysterious symptoms: skin rashes, short-term memory loss, shortness of breath and the loss of smell and taste. Two patients with long-haul symptoms, Hannah Wei and Hannah Davis, join Adrian Cheung to talk about their experiences with COVID-19 and why they’re pushing for more research into a virus with wide-ranging and unknown long-term effects.