Cancer patients are concerned about the effectiveness of Covid-19 vaccines

Cancer patients have had to isolate themselves over the past year because they are among the most exposed to Covid-19 due to their weakened immune system. The new Covid-19 vaccines have not been tested on immunosuppressed patients, leaving doctors unsure whether they will protect them. JowharMarie Schuster and Chris Moore report from the Sainte-Catherine Institute of Oncology in Lyon.