Dolly Parton's Donation Helped Fund Moderna's Breakthrough Coronavirus Vaccine Research

In April, less than a month after Covid-19 was officially declared a pandemic, Dolly Parton donated $1 million to coronavirus research at Vanderbilt University. More than seven months later, it's been revealed that the legendary performer's donation helped fund Cambridge-based Moderna's Covid-19 vaccine, which this week became the second coronavirus vaccine with a stunningly high success rate. Katie Johnston reports.