A source confirmed to NBC news that three researchers from China’s Wuhan Institute of Virology got so sick in November 2019 they needed hospital treatment. Rumors that Covid-19 originated from a lab are now gaining momentum. Eunice Yoon reports. Jamie Metzl, senior fellow at the Atlantic Council, also discusses why it’s important to understand where the Covid-19 virus originated. Only about 2 percent of Japan’s population has been fully vaccinated ahead of Tokyo Olympics. Meg Tirrell discusses why Japan is lagging in the Covid-19 vaccine race. Sen. Amy Klobuchar (D-Minn.) introduced a bill to ban political campaigns from steering online donors into recurring contributions by default. Valerie Castro reports. Plus, there’s been a continuing pile-up of police misconduct cases since George Floyd’s death a year ago. Ylan Mui reports.