If this COVID-19 vaccine from Moderna ends up working out, be sure to add Dolly Parton to your gratitude list. The Guardian reports that Parton’s donation of $1 million to coronavirus vaccine research was used in part to support the development of Moderna’s vaccine, which boasts a 95 percent protection rate against the deadly virus. Parton’s donation has also supported convalescent plasma therapy (in which COVID-19 patients are treated with plasma from a person with antibodies) and numerous research papers on the virus. The country music icon made her donation back in April after a discussion with her friend Dr. Naji Abumrad from the Vanderbilt Institute for Infection, Immunology and Inflammation at Vanderbilt University in Parton’s home state of Tennessee. Abumrad, who met the singer in 2014 when she received treatment at the hospital for injuries related to a car accident, told Parton that “some exciting advancements” were being made in pursuit of a vaccine, encouraging her donation.