Watch CNBC's full interview with Moderna CEO Stephane Bancel on earnings

Moderna CEO Stephane Bancel joins CNBC's Meg Tirrell and the 'Squawk Box' team to break down the company's latest earnings report, discuss the need for Covid-19 vaccines in the fall and more. "We had a strong financial performance in Q1," Bancel tells CNBC. "As we move into endemic, we really expect the second half of the year to be stronger."