Voting in the Pandemic – Americans will vote for president in just a few months, and the pandemic has forced election officials to explore ways to keep the public safe at the polls and offer alternatives to in-person voting. As Bill Whitaker reports, so far, it's not been an easy task.Wild West of Testing – A three-month investigation reveals federal officials failed to immediately stop the distribution of many COVID-19 antibody tests they knew were flawed, leading to inaccurate data about the spread of the virus. Sharyn Alfonsi reports. Probiotics – Consumers spend tens of billions of dollars on probiotics that promise to improve health. Dr. Jon LaPook takes a look at the so-called "good bacteria" and whether all the hype is true.